Technically even making a copy of a CD for your own use counts as copyright infringement. When cars had CD players people would often make CDRs of their favourite CDs, and now people rip CDs to files.
In theory all of this is illegal - because you don't buy the music with a CD, you buy a license to listen to the music from that particular run of the CD.
Automated transcription - already a solved problem for solo piano and guitar, and partially solved for more complex source separation applications - would follow the same rules.
So - technically an infringement, but you wouldn't be sued for private use.
Sooner or later this will turn into an actual court case. Until then, the law on automated transcription is ambiguous. IANAL but I would guess it depend on whether a transcription product is sold as a "music ripper" for other people's work, or as a study aid for your own playing.
And of course CD/stream ripper software has never been illegal. There have been various short-lived DRM efforts, but none of them seem to stick for long.
Now it's fairly easy to rip Spotify playback, but no one seems to mind. But if you started running your own Spotify competitor they might - even on a small scale.
You're very very wrong. Don't believe blindly everything that the music companies want you to believe.
You don't buy the right to listen to a CD, you buy a copy of the CD and the music for use as you wish.
Many European countries have an explicit right to private copy, you can copy/transform/archive anything you have for personal use. There is a tax on storage media that goes to the labels. https://en.wikipedia.org/wiki/Private_copying_levy
I believe the US has something similar (you can do whatever you want with the copy that you own) but an American would be better place to comment on that.
What you generally don't have (across jurisdictions) is the right to make copies and distribute them.
CD rippers have never been illegal. They are illegal in a few places if they circumvent copy protection mechanisms and even there it depends on the details.
In theory all of this is illegal - because you don't buy the music with a CD, you buy a license to listen to the music from that particular run of the CD.
Automated transcription - already a solved problem for solo piano and guitar, and partially solved for more complex source separation applications - would follow the same rules.
So - technically an infringement, but you wouldn't be sued for private use.
Sooner or later this will turn into an actual court case. Until then, the law on automated transcription is ambiguous. IANAL but I would guess it depend on whether a transcription product is sold as a "music ripper" for other people's work, or as a study aid for your own playing.
And of course CD/stream ripper software has never been illegal. There have been various short-lived DRM efforts, but none of them seem to stick for long.
Now it's fairly easy to rip Spotify playback, but no one seems to mind. But if you started running your own Spotify competitor they might - even on a small scale.