This[0] is a video by Adam Neely, who frequently talks about the cluster f*ck that is copyright law with regards to music, interviewing two guys having done this (within some constraints).

This[1] is the website linking to the dataset and code that was used to generate it.

[0] https://www.youtube.com/watch?v=sfXn_ecH5Rw

[1] http://allthemusic.info/