Q: have you ever made a song in an odd time signature
A: well, ...... odd time signatures are most often used as transitions. i do that all the time. what is more rare, is a song in an odd time signature (besides 3) that stays in that same time signature, like as much as a 4 song stays in 4. and i have done that also, but less often. What is slightly more common than that, i think for other people, and also for me, is to use odd time signatures and keep changing them constantly.