Musical Game...

I found this photo awhile back and it's been the source of a lot of entertaining brain teasing... see how many bands/musical acts you can find in it. I believe there's supposed to be a total of 75.

I've found 54 so far. I'm really stuck on the last 21. I can find at least 13 more items that I have no clue on but I know they've got to be SOMETHING. Feel free to comment and leave the ones YOU see!