I don’t use Logic— but I guess I’d expect for some kind of threshold for the tempo sensitivity. Like it defaults to bars but you might be able set it to half a bar? At some point it has to have some kind of reference for the subdivision, like it can’t change the tempo every quarter not because there’s not enough data points.
One thing you could possibly try would be to do it with a DI guitar thus eliminating vocal bleed. It’s possible the tempo mapping might work better that way. I don’t know. Not a fan of DI acoustic guitar here, but it could be scratch.
Or, you could cut a scratch track you don’t plan to use, make a tempo map from that, then program a beat to that map and track to a backing band that (theoretically) has a more human feel.
Hey thanks for chiming in...
See the thing is, yes I could do that, and have done (scratch track stuff) but what I want to do here is preserve the original take of the acoustic and vocal, and have that survive to the finished overdubbed product.
Cant find any setting to make the resolution smaller than a bar, even though it detects quarter notes.. have asked on a Logic Specific forum..will post solution if I find it.
I am strictly interested in preserving the performance, and creating upon that..I have successfully done it the other ways suggested.
When I've aded drums to things without click, I just played through a bunch of times to learn where there other parts were. I did this and we decided to add drums after the fact. I just played it a bunch of times. I loop recorded and comped the playlists. I'm sure some hyper-edit types might want to go in an move a few notes, and maybe I should have, but the artist and I liked it just fine.