When doing suicide, I normally build up a set of possible songs for each singer - preferably with at least 4 available selections at any time.
I didn't always manage that last night. In fact, on three separate occasions, I ran out.
Each time I looked down at the open songbook in front of me, focussed at random on an artist, and picked a song. Each time it worked.
One other time I mistyped a selected song number, and ended up with a much better song.
I sometimes think that one could work out a remarkably accurate karaoke Tarot...