https://www.youtube.com/watch?v=_y5EG1NaenY
"My Husband is a Bass Player" was a fun experiment... but not for the faint-hearted. In this (song?), I use my fretless bass to mimic the sounds of each person's voice, and I use my fretted bass to play chords built on notes taken from the vocal lines for that given phrase. Have fun!