OK, each playlist represents some connecting theme. The clue to the theme might be in the song's title, the name of the band, or something in the song itself.
Playlist #1 (easy one to get you started)
SONG 1 SONG 2 SONG 3 SONG 4 SONG 5
Playlist #2
SONG 1 SONG 2 SONG 3 SONG 4 SONG 5
Playlist #3
SONG 1 SONG 2 SONG 3 SONG 4 SONG 5 SONG 6
Playlist #4
SONG 1 SONG 2 SONG 3 SONG 4 SONG 5
These are harder and require a little outside knowledge:
Playlist #5
SONG 1 SONG 2 SONG 3 SONG 4 SONG 5
Playlist #6
SONG 1 SONG 2 SONG 3 SONG 4 SONG 5