The ll separates measures.
The "-" means to suck air in rather than blow out.
Riff 1:
ll -3 4 -4 ll -3 4 -4 7 ll
Riff 2:
ll 5 6 4 ll 4 6 4 ll 7 ll: -6 6 -5 5 -5 6 5 ll 7 :ll
Riff one is played on a bass I believe at the beggining of the song and riff 2 is played by trumpets towards the middle.
