Just as the title suggests, this DVD focuses on the advanced topics of independence and polyrhythms, with challenging yet highly educational clips from Gavin Harrison (Porcupine Tree), Steve Smith (Journey, Vital Information), Antonio Sanchez (Pat Metheney), David Garibaldi (Tower of Power), Derek Roddy (extreme metal master), Todd Sucherman (Styx), Randy Black (Annihilator, Primal Fear), Chris Coleman (Chaka Khan, New Kids on the Block), Thomas Lang (Stork, Gianna Nannini), John Riley (jazz leg...