Yes, this has been discussed and it's good to have this reminder.

I think it should be an option, though, and not just automatic to set it by measure one. There are times when I like to make one or two pickup bars at the beginning and have the actual song begin in bar 2 or 3. Drum fills are one such use. While I think I would almost always want the count off to be the number of beats in the first bar of the actual song, I would like the option of deciding that. Think about a song in 5/4, for example. In BIAB, this must be a repeating series of 3 then 2-beat measures (for Take Five, at least; other patterns are possible).

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