Peter,

For what it's worth, when I want to get copied vocal tracks working co-operatively and constructively, I always time-shift one of them by 10 - 15 milliseconds (ms). It doesn't matter whether it's to the left or to the right. Also, I usually lower the pitch of one of the tracks by 5 - 10 cents. These changes introduce enough difference so that the doubling works. I mention this approach just in case you haven't tried it before.

Regards,
Noel




MY SONGS...
Audiophile BIAB 2025