Cool Tool: Croonify
Recently a joy of mine, when my housemate is out, is to find some karaoke tracks on YouTube and sing them to myself. It feels very different from singing at a karaoke room or karaoke bar. It's lower stakes, a good way to practice singing, something lovely to do in the kitchen. I don't have a mic or anything, but I'm thinking about getting one. Why not?
And one of the ways it's different is that YouTube has such a wide variety of karaoke songs. They're not official, they're just made by users who want to share some songs they love. I love seeing all the different touches they add - some really impressive effects
or deliberately going for those retro Sunfly styles
It's a joy to me - the song, singing, and feeling a little community with the people who created the videos.
a ranking of the youtube videos you can use to do karaoke of "Expert In A Dying Field" by The Beths. Third Place: www.youtube.com/watch?v=jvIu... + has the nice album art & the video in the background ~ looks clean and corporate - doesn't track through the words, just highlights the current line
— v buckenham (@v21.bsky.social) 2025-04-27T15:41:31.042Z
Second Place: www.youtube.com/watch?v=QtbM... + called "FakeyOke" + does track through words + classic karaoke aesthetics ~ think the backing is a little worse than #3
— v buckenham (@v21.bsky.social) 2025-04-27T15:41:31.043Z
First Place: www.youtube.com/watch?v=7NSZ... - doesn't track the words - or the line + does have a cool painting of Optimus Prime thanks to everyone who took part in this competition, and congratulations to Melvin!
— v buckenham (@v21.bsky.social) 2025-04-27T15:41:31.044Z
wait! important followup! Melvin also posted a video of him singing this song (to his own video) at karaoke! www.youtube.com/watch?v=FA30...
— v buckenham (@v21.bsky.social) 2025-04-27T15:51:18.415Z
Anyway, as one of those examples might have demonstrated... I like singing Belle & Sebastian's songs. I used to really love their music, I spent a good while in my 20s working backwards through their albums, getting obsessed with each one in turn until I reached Tigermilk. For a while the intensity of that obsession curdled into disdain - I did feel like a bit of a cliche, and I wasn't really sure about the newer stuff... But that's moved on and now I feel very at peace with liking their songs a normal amount, and occasionally more than that.
I was singing Lazy Line Painter Jane earlier while frying up some chicken and mushrooms to have with rice. And then I thought... ah, you know what would be great? This Is Just A Modern Rock Song. The era just after Tigermilk, the stuff that came out on EPs and was only retroactively collected as Push Barman... that was probably their best period. And then, to my consternation and displeasure... I found that it didn't exist. Well now... I still want to sing it. All these people are making these songs... Surely I can do this?
Spoiler: Yes, I could
First, I found the video on YouTube:
And then I downloaded it. I clicked the Download button on YouTube, and it told me I had to subscribe. I thought I'd installed a plugin to do that? Ah well. I tried a random website that lets you download... it failed. I tried installing youtube-dl
but it failed to install using their curl script, and brew
said it was unsupported. I then finally installed ytp-dl
which did work... some fussing to get the command to download it & convert to mp3 working. Okay. I have the music downloaded.
And then... I guess I need to remove the vocals. I remembered seeing a comment on one of these YouTube vids that they'd used x-minus to remove the vocals. Oh look, it's a website. Huh, that worked... pretty quick and it sounds great. Hurrah for AI, this stuff was pretty crap only a few years ago.
At this point I was like... okay, guess I'll just sing from the lyrics. Which would have worked with a bunch of songs, but this is just one escalating riff with some singing layered kind of casually on top. Not enough structure to give me cues, I didn't know the song well enough. Ah well, let's do this properly.
And so I tried to find some nice karaoke making software. I guess I need to find some... downloadable software which lets me enter the timings by hand? Tapping out the song, that's how I think it's done. I guess I can do that with the original track then substitute in the vocal-less track later... All this software is charmingly from an era before now. MidiCo looks good but idk if I want to spend $30 on this when I'm just messing around waiting for my rice to get done.
And then I nearly gave up, and then I saw someone mention Croonify and... oh yeah, look at this:

Looks so simple... let's try it. Upload the original mp3... Paste the lyrics... Add the title... press Submit...
Okay, and then you go away and wait like 10 minutes for it to process.
But when I came back... yep, that's a karaoke version of the song! Is it good? Well, the text styling isn't as swish as lots of the YouTube uploads. And the vocal removal is not amazing - you can hear some of the breathy bits sticking around where they got removed nicely by x-minus. They put their logo in for the breaks... that seems fair, though. And, alas, the automatic system got a little confused with the long long break in the middle, and kept trying to start the next lyric a little too soon. I'm not — I'm not – I'm not – I'm not as sad as Dostoevsky.
But then... it's labelled as being in alpha, but there's a manual editor. Pretty doable to tweak those timings for that line! Then push a button to re-guess the word timings. Then push another button and wait to re-render the track. It's pretty good, imo!
So here it is, sing along if you know it:
How it works, I reckon
This tool is great. A simple clean interface to get going. Some options once you have something. AI being used for clearly demarcated tasks, stuff that's tedious for people to do but now able to be automated. I reckon the process something goes like this:
- AI model splits the track into backing & lead vocals
- AI model matches lead vocals against the lines of the lyrics
- AI model then matches words with lead vocals, spitting out a subtitle track
- Then something renders the subtitle track to video, and overlays the backing track to it.
It's also so lovely that it's free. And so simple and again, very slightly janky with the homepage. It feels like it's been made by a person and not by editing a theme. I just made a bet with myself and won - the HTML is readable, and the CSS is handwritten. There are alternatives with subscription services, I just found mykaraoke.video ($5/mo if you want to use AI features, although free if you do the sync yourself) and Youka ($14.99/month or $9.99 for 10 generations). And it's not like Croonify is entirely free of commerce - they encourage and accept donations, and I believe they probably get some. But it fundamentally feels like something that has been given away because it's a useful thing for people to use, and not so expensive to run. Rather than something made because it seems like a business opportunity.
And fundamentally!!! I wanted to sing a song, and I failed to sing the song, and now I can sing the song! What better use for technology is there than that?
As a coda to this piece, let me recommend this Jaime Brooks essay on the history and future of recorded music. The end in particular has stuck with me - music as something we create together. The joy of singing in the kitchen.