Trimming the silence from hidden tracks using AI

05 January 2026

Although most people are streaming now, I'm still living in the world of CDs and MP3s. I buy CDs and rip them to iTunes, where I playlist them for work, listening out and about, and inspiration when running.

I recently picked up the Alt-J album 'This is All Yours' in a charity shop, and was intrigued to see that the last track was 16 minutes long. About ten minutes of that, though, is silence. It's one of the many albums that have a hidden track, concealed within the final track after a long silence. I understand that bands might want to gift listeners a song that they don't think is part of the main album, or might prefer to surprise listeners with a particular song. But it's an irritating listening experience having a long silence in the middle of a track. It means neither song can be playlisted or shuffled. A couple of much-loved albums by my favourite artists have the same issue, including Kenickie's At the Club and Depeche Mode's Sounds of the Universe. (That's Lauren Laverne from Kenickie pictured on the right in a photo I took when I was writing for Making Music. See more photos here.).

So, I wondered whether this is something ChatGPT could fix for me. I've been doing a number of experiments with it recently, so this seemed like an interesting thing to test, especially since I hadn't tried any audio processing with it before. My plan was to upload the MP3 file and have it split it into two separate files with the silence removed. I could then import these files back into iTunes.

It proved to be harder than I expected. There were several attempts where ChatGPT split the track into two files, but did not remove any of the silence. It seems the silence wasn't perfectly silent, so an alternative approach was used where ChatGPT focused on where the music was instead of where the silence was. At one point, ChatGPT was getting confused because it was overwriting the file I'd uploaded with one of the new files it had created. After a few goes, I thought that ChatGPT understood the problem even though it wasn't providing a solution. I asked it to write me a prompt I could use in a new chat to get the expected results. ChatGPT built some checks into the prompt and indicated how to perform the task, which helped to increase the success of the prompt. It took a few iterations in the new chat, too, but I did end up being able to split tracks easily.

The verdict, then? This is a problem that ChatGPT can solve, but the amount of iteration required isn't justified given I only have a handful of files to edit. It wouldn't take very long to edit the files manually using a tool like Audacity. Nonetheless, it was interesting to see that ChatGPT is technically capable of performing this work.

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Discover GamerCard for handheld gaming and coding

12 November 2025

The current issue of the Official Raspberry Pi Magazine includes my interview with inventor Grant Sinclair about his handheld GamerCard device. It's based on the Raspberry Pi Zero 2 W, so it can run a wide range of software, including PICO-8 and classic computer emulators. There are two four-button controllers under the pads on the front of the device.

Grant's vision is for GamerCard to be used not just for gaming but also for coding. He's incorporated Qwiic connectors so that users can access the GPIO pins to expand the device and schools can ensure that the devices remain reusable. He said some schools had Arduino or Raspberry Pi devices that they couldn't reuse because projects had been soldered on to them.

Grant is the nephew of Clive Sinclair, who gave us the ZX-81 and ZX Spectrum home computers. In the same way that those machines brought a mixture of gaming and coding into homes, Grant's new device puts those capabilities in the palm of your hand. I can imagine myself packing a small keyboard and a GamerCard for coding on long train or plane journeys.

I interviewed Grant in the bar of a fancy hotel in London on a sunny day. Most of the surfaces were mirrored or glass and the sun was streaming through the windows. I'm especially pleased at how well the photos came out in those circumstances. I used a red padded wall and a stripy rug as backdrops, and angled the camera and device carefully to minimise reflections.

Below you can see one of Grant's videos of the GamerCard, showing the Nintendo Switch games BlooKid2 and AstroBlaze which have been ported to the GamerCard.

The Official Raspberry Pi Magazine, formerly known as The MagPi, is available in newsagents including TG Jones, formerly known as WH Smiths. Why not buy a copy while listening to The Artist Formerly Known as Prince? You can also order online here.

While you're here, why not read my Raspberry Pi articles, Scratch tutorials, or get my free Coding Compendium ebook?

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Out now: 10th Anniversary Edition of Earworm

01 October 2025

My novel for adults Earworm is now available in a 10th Anniversary Edition.

In the book, a record company plans to replace pop stars with music-generating technology, and comes under fire from ageing rocker Dove and two of his most devoted fans.

It's never been more topical: The Velvet Sundown recently achieved a million streams on Spotify before they were rumbled as being an AI band. Streaming service Deezer reported this month that it is receiving more than 30,000 fully AI-generated tracks every day, more than 28% of new music uploaded. When I tried using AI to make music, I was struck by how convincing it was. Play my EP Songs About Coding here.

Earworm was first published under the title University of Death in 2007, named after the band at the centre of the action. When I published it on Kindle in 2015, I made some small edits, commissioned a new cover and changed the title to Earworm.

Music magazines have reviewed the book positively, saying it's smart, fast moving and funny. The latest review is in this month's Blitzed magazine (issue 22). They said: "Given that it was first published in 2007, Earworm is really prophetic. Who would have thought that computers could write entire songs in just a few seconds? I really enjoyed Earworm and the Extras section at the end is very interesting too. There are several laugh-out-loud moments. Highly recommended."

The extras section has been enhanced with 101 free band names, taken from the source Jonathan identifies in the story, and a new Afterword. There are two deleted scenes (only one on Kindle for technical reasons), and I updated the Poptastic Trivia, too, which often surprises readers by showing how much of the book was inspired by real life.

It was a delight to read it afresh after so long and to be reunited with the characters from the book, with whom I spent a couple of years during drafting. I wasn't sure how I would feel about the book looking back on it now, but I was pleased with the characterisation and the way it all fits together like a jigsaw. I would find myself wondering why I had put a particular scene or detail in, only to rediscover its role in the plot later on.

Earworm is out now in print and on Kindle. It makes a great gift for the music lover in your life. Find out more, get a free PDF sampler of Earworm and buy your copy here.

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What are the security risks of agentic AI, and why are firms merging their HR and IT departments?

29 September 2025

I had two new BBC articles published during the school summer holidays:

• How can we stop AI agents going rogue?: New risks emerge when we let AI make decisions and take actions automatically. Security community OWASP published a list of 15 threats that are unique to agentic AI, on top of those that arise from AI generally (such as hallucinations and bias). For this article, I looked into the new risks and some of the ways they could be mitigated. One particularly alarming incident I wrote about was when an AI system attempted to blackmail an executive to stop him switching the AI off. Luckily, this was in a test environment, but it illustrates how AI could attempt to manipulate people to achieve its aims.
• Why are firms merging their HR and IT departments?: When I first heard that 64% of senior executives expect to merge their HR and IT departments within five years, I was puzzled. I always considered HR and IT to be quite different: one is about people, and the other is about technology. My interviewees explained that people and machines need to work more closely together as AI is adopted, and that organising teams around the work makes it easier to use a mix of AI and human skills to deliver it.

I've recently redesigned my articles page to make it easier to navigate and to reduce its carbon footprint by cutting the number of images. I hope you like the new streamlined design.

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Visiting the Bourdon Street Chippy

10 September 2025

I was taking a photo of a dinosaur fossil sculpture in the street, when three kids rushed up to it, followed by their Mum. "Did you know there's a felt chip shop around the corner?" I asked. "Like, a chip shop made of textiles."

"You mean the Bourdon Street Chippy?" she said. "We came past that. We thought it was real."

It is utterly convincing at first glance, and wonderful for kids and adults alike. I had visited earlier and felt joyful to be immersed in such a fun and surprising artwork.

The food on the table, signs and pictures on the wall are all crafted in textiles

Artist Lucy Sparrow and her team have recreated a dine-in and takeaway chip shop, with tables set with plates of food. The fish, sauce bottles and celebrity photos on the wall have all been created in textiles in brilliant detail. In the room next door is a hot food cabinet, filled with fish, sausages, mushy peas, and pies. The front of the cabinet displays a stitched poster for a circus. Behind the counter is a jar of onions, pickles and eggs underneath a neon takeaway sign. All the the food, down to the individual chips, has a cute face, with black beads for eyes.

Artist Lucy Sparrow at the chip shop, where she serves up felt fish and chips to customers

Like Lucy Sparrow's previous installations (including the Cornershop in 2014 and the Bourdon Street Chemist in 2021), everything is for sale. It's art, so it'll cost a bit more than your local chippy. A large cod and chips meal is £450. However, prices start at £5 for a sauce sachet, so everyone can join in fully and own a part of the installation. On my desk there is now an onion, with big beady eyes and a satisfied smile, catching the light in its gold thread. When you order, Lucy or one of her assistants serves your food. She picked up my onion with felt-covered tongs and carefully put it into a paper bag before ringing it up on the card reader. It's strange to be in a place so fantastical, that is nonetheless a real functioning shop.

The installation took Lucy and her six assistants eight weeks to create and has taken over the Lyndsey Ingram art gallery in London.

When I visited, Lucy proudly pointed out her award on the counter from the National Fish and Chip Awards. It was for the most heartfelt chip shop opening.

The installation runs for six weeks until 14 September 2025, open Wednesday to Sunday from 11am to 6pm. Photos by Sean McManus. Please ask if you want to reuse them.

The food has cute faces on it, like these friendly pies

Condiment bottles, also made from textiles

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Shadow AI: Why are employees smuggling their own AI tools into work?

04 February 2025

Artificial intelligence (AI) is a valuable productivity tool for many jobs now. I've written previously about how AI can negotiate contracts and help with programming, but people are increasingly bringing their own AI tools, such as ChatGPT, into the workplace without permission. According to a Software AG survey, half of knowledge workers use personal AI tools. Unauthorised AI tools are sometimes called "shadow AI", a more specific version of "shadow IT", which is the term used for unauthorised IT.

For my latest article for the BBC's Technology of Businesss, two people told me why they use shadow AI, on condition of anonymity. The article also looks at the risks of unauthorised AI and showcases Trimble's solution to shadow AI, which was to create its own general-purpose AI tool for its people to use.

The article was given the top feature slot on the BBC News homepage, and was followed up by the Business Matters programme on the BBC World Service. Read it here: Why employees smuggle AI into work.

To be updated when I write articles like this in the future, please susbcribe to my newsletter. Thank you to everyone to helped with the article, especially my two interviewees who shared their experiences anonymously.

Photo credit: Steve Johnson at Unsplash

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Play your own music on the Lego Retro Radio

09 January 2025

When I first saw the Lego Retro Radio set (10334), I wondered whether I could get it to play my own music by putting a Raspberry Pi inside it. The Lego designer included a grip for mounting your phone inside, but I wanted something that could interact with the tuning dial on the radio, and that I could leave in the radio permanently.

The Lego set features a sound brick, which has a button in it. When the button is pressed, it plays a short sound snippet, including some funny adverts and DJ quotes. The sound brick is triggered by turning the tuning dial. The key to making my project work was designing a replacement sound brick, which I could connect to the Raspberry Pi.

Now, when the tuning knob is turned, it activates my button, and a Python program reacts to the button press by changing the music playing.

To make it easy for others to use, I created the simplest program I could, which just plays songs and jingles alternately. However, it would be possible to make a more complex program using my Raspberry Radio code as a starting point. This uses text-to-speech to introduce each track, and indexes your music so you don't have to put the filenames in the code. It would be possible to have the button press change channel by switching between different song lists, and perhaps even changing the DJ's accent. Another cool addition would be to give each channel a name which is announced when it starts playing.

I've configured the Raspberry Pi so that my Python program starts running when the device is powered up. Inside the radio, I included another button which can be used to initiate a safe shutdown, without risk of damanging the micro SD card used for storage.

See my build instructions for playing your own music on the Lego Retro Radio using a Raspberry Pi.

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