Hi Trax, I know that in the latest BiaB 2025 one can use micro-chords but I don't think they were available in 2015: others will have to correct me if I am wrong. Note with micro-chords you can have up to 16 chords per measure, in 4/4 time.

IIRC you can only have 4 chords per bar in 2015. Thus the only options are Bar 1 ,C C#, Bar 2 F# B7, Bar 3-E. Or any combination of chords you want with one chord on the first beat of a measure an another chord on the third beat of the measure. Or by using commas you can get four chords per measure like bar 1 C,G G#,C#
Bar 2 = F#,B7 A,B7, Bar 3 = E: a chord change on every beat.

I hope this helps and good luck.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware