BiaB can already make music in any time signature, except the n/8 where n is odd like (1/8, 3/8…)
Existing time signatures can include
1/4, 2/4, 3/4, 4/4, 5/5, 6/4, 7/4…. 11/4 etc.
3/8, 6/8, 9/8, 12/8 also supported.
The thing that bugs people is that for time signatures higher than 4.4, like 5/4, 7/4 etc. we have a bar of 3/4 + 2/4. So you enter the bar of 7/4 over two bars instead of one. And in the case of 6/8 you enter two bars
On this discussion, people saying that we don’t have 6/8, 9/8, 12/8 time signature support is baffling to me.
For example, for 12/8. You can set the notation time signature to 12/8 and view 12/8 notation. And you can enter 3 chords per beat, which is 12 chords per bar. And more importantly, 100% of the styles, realtracks, realdrums work with these time signatures.
If you’re looking for something like 11/8 or 5/8, you’re correct in that we don’t support those yet.