I'm trying to get more in the habit of being able to both sing and play the heads to the tunes, preferably arco and pizzicato. Right now I'm working on "Afternoon in Paris", "Satin Doll" and some others. I'm curious what some of you have used for this exercise. Chris Fitzgerald has a good video on thumb position where he plays "Blue Monk". What heads have you wanted to (or had to) learn on bass? Thanks.