Up and down I take your mood.
I make you smile, or sometimes brood.
Step in time to my prose and rhyme;
Some sway, some lurch, some skip in line.
Whatever you like when you want to move,
I'll find a beat and set your groove.
Roll over for answer: Music
You guys all got that one fast! I'm going to have to put my thinking cap on for a tricker riddle! ~F