#16 is good because it says Collin County Youth Orchestra and CCYO. The violin shape is a little pointy on the sides, looks like a guitar - #15 has a interesting background shape with round and pointed corners..
#21 is interesting, at first I didn't recognize the violin shape and I also like the star - we are in Texas, The Lone Star State! Thanks #11 isn't quite musical enough looking Thanks! I appreciate your time