To find music in open directories is quite easy in google. You don't have to bother with illegal file sharing sites.
artist name intitle:”index.of” “parent directory” “size” “last modified” “description” [snd] (mp4|mp3|avi) -inurl:(|shtml|lyrics|mp3s|mp3|index|null3d|listen77|indexofmp3) -gallery -intitle:”last modified”
Just change the artists name to what is required