Kimmo Pohjonen is a Finnish accordionist who is known for his avant-garde and experimental work with his custom-made electrified and modified instrument. He has released nine albums of his work and has toured Europe extensively, as well as performances in Japan and some in North America. He records and performs both solo and in collaboration with musicians and other artists, including the Kronos Quartet, and percussionist Pat Mastelotto and guitarist Trey Gunn of King Crimson. Pohjonen still lives in Finland when not on the road. He has performed with one of his daughters, Saana, who plays the drums.

Lee Patrick Mastelotto is an American rock drummer and record producer. He has been a member of King Crimson, Stick Men, Mr. Mister and O.R.k., as well as working as a session drummer with XTC, The Pointer Sisters and The Rembrandts, among others. In addition, he has led or co-led other projects including Mastica, Tuner, TU and The Mastelottos.