Yes I can see that but that's only if you have an instrument like your drums that didn't record to a click. That was the primary reason the ACW was developed in the first place. It's to be able to add Biab tracks to old recording you made 30 years ago. Those old recordings were in most cases just live, no click so yes the tempo was all over the place. We're talking now about using it in a modern studio setting. There are so many different ways people record but I would guess 80-90% of the time modern studio sessions are using a click. Unless all the players are bozo's there's no need for a tempo map.

FreshStart, you're talking about existing DAW tracks. Where did they come from? Didn't you or other session players you know do them? In that case you know the chords already, no? JJJ's point is also very good. Unless you're talking about a two chord modern pop song, the ACW isn't all that accurate. You have to make so many corrections it's hardly worth it. But of course if you really don't know music that well, I guess you wouldn't know how to make the corrections anyway. But even then your ears would tell you something doesn't sound right.

Bob

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