Fascinating to see this on HN! Crochet can be easy and fun, and is often very procedural/mathematical - in work like this there are building blocks that are chained together like function calls and loops. I wouldn't recommend starting with things this fine and detailed though.

You're looking for early testers, but you already claim to have nearly 40,000 customer reviews. Your screenshot is AI generated. You somehow have an order of magnitude more movies than Netflix. You show text conversations that reference another site name.

Everything about this looks like a scam.

Yes, I was disappointed.

The original paper https://arxiv.org/abs/2410.22046 did look at chord progressions. They also trained a machine learning model to predict the next chord. Some of the chord progression data is in graph form at https://github.com/spyroskantarelis/chordonomicon.

The raw chord data is at https://huggingface.co/datasets/ailsntua/Chordonomicon/tree/.... It consists of one row per song containing a list of chord names in song order (no timing information) and Spotify ids for track and artist. It seems like Spotify has a different id for every released version, so it's really hard to search for particular songs in the data.

To normalise across key signatures you need to know what key the song is in (at each point), and the data doesn't contain that. For many genres it could be guessed reasonably accurately from the chords.

They are questioning jancsika's assertion at the top of the thread that an interval can somehow contain more than two pitches:

> An "interval" is the difference between two (or more) pitches.