What if you could recover the waveform, compare the instrumental, and see if the removed track used an instrumental with either a similar waveform, or you could see if you have the correct instrumental for the removed track when making a remake/remix.
Here's two good reasons I am asking this:
- You could make a remix or a soundalike to the removed track based on the waveform or just try to find the correct Instrumental based on the removed tracks waveform.
- You can possibly identify length by the removed tracks waveform.
- This would also be fetched with track id for a little more security.