Trying to speed up an entire song in Logic

[jh8406]

Was trying to figure this out with a friend of mine. It started as me recording one or two tracks of my own into Ableton after I had already imported a mono mix track from my friend which was recorded in Logic. I sped up the track or was sped up in Ableton when I loaded it. Regardless, we were trying to speed up the entire mix in logic, after loading the one or two additional tracks. I thought it could be done globally(i'm unfamilar with Logic), but it seems it can only be done individually. Is this true? What's the easiest way to do it? Thanks.

[Nick Sevilla]

Logic has a time n tempo plug in, and it does either individual or batches
of audio tracks.
Consult the manual on how to get the best results for your case.

I highly suggest having a calculator handy as well.

Cheers

[lysander]

What version of Logic are you using? If it's 9 it has a pretty flexible varispeed control that you might be able to use.

Are the files the same sample rate? Could that be an issue here?

[jeddypoo]

Logic 9's varispeed function is actually pretty astounding within reason. Definitely a useful tool. If you have a really complex mix with lots of plugs be sure to set your buffer speed higher than you normally would. It's kind of hidden, for some reason, you have to right-click on the transport toolbar to find it

[jeddypoo]

Logic 9's varispeed function is actually pretty astounding within reason. Definitely a useful tool. If you have a really complex mix with lots of plugs be sure to set your buffer speed higher than you normally would. It's kind of hidden, for some reason, you have to right-click on the transport toolbar to find it

[dfieldmusic]

I don't use it often so other folks might have better methods but I find it useful to make sure all of your tracks are exactly the same length (even if that means putting a little block of blank audio at the top and tail of tracks) before you start messing with the logic time-stretching. That way everything keeps neat - parts stay in the same relative positions regardless of the stretching or temp changes. Is that useful? Or is that totally obvious?