There are two ways (maybe more - others can chime in) to approach this.

1) Select a waltz swing style, which will give you a triplet per beat (so 3 triplets times 3 beats per bar gives you 9). If you use this method, you can only change chords every triplet In notation view, you'll have to select swing (versus straight) resolution to enter notes on the tripletized bar lines.

2) Select a straight waltz style and use 3 bars to represent the 9 beats in 9/8 time. Notation will look horrible and you'll probably have to set the tempo pretty fast. The advantage here is that chords can change on any note. It's a situation where it sounds good, but doesn't look good.

In either case, you won't get a proper time signature on the notation, since 9/8 is not a supported time signature in BIAB.

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John

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