@Bernd
I think to remember that somebody, @jjfagot maybe, asked that already, and he was said Scaler recognizes chord only, and not all chords
For example the audio detection doesn’t work for arpeggios and certain kind of strums
On the other hand, I used the EZ Bass AI with old projects of mine where I lost the bass MIDI, and it recognized perfectly (sometimes less perfectly) the bassline in an MP3 containing other instruments