Oriģināls: Andrew D. Gordon. Each of the 21 grooves is broken down into patterns ranging from 3 up to 16 with over 150 patterns in total. Book.
Tulkojums: Ultimate Mūsdienu Rhythm Tastatūras Grooves. Grāmata. Kompaktdisks. Sheet Music, CD. Tastatūra. KBD. Pop, Rock, Blues, Jazz, Funk, R.