The Yang to the Yin of Whetzel's album Sum, "Capitol Hill: Secret Tracks" is a high energy mix of South Asian, African and American music. Tabla and Darbouka beats are combined with innovative throat singing and Whetzel's diverse palette of instruments which ranges from Sarode to guitar, Riqq, to drum kit. Indian Virtuoso tabla player Vishal Nagar appears on several tracks adding intense tabla skills to the mix. Tucker Martine provides special audio effects on several tracks and drum kit players Adam Lofstedt and Leftheri Mahlis bring some tasty beats. Canadian guitar ace Gavin Douglas also appears on one track.