"Jeff Parker (born April 4, 1967) is an American jazz and rock guitarist based in Los Angeles. Parker is best known as an experimental musician, working with avant-garde electronic, rock, and improvisational groups.

Parker currently plays guitar in the post-rock group Tortoise and also was a founding member of the ensembles Isotope 217 and the Chicago Underground Trio in the 1990s and early 2000s. He is also a member of the Association for the Advancement of Creative Musicians, as well as working with musicians George Lewis, Ernest Dawkins, Brian Blade, Joshua Redman, Fred Anderson (musician) and Jason Moran. He has released three solo albums: Like-Coping, The Relatives and Bright Light in Winter."

"Rob Mazurek is an American electro-acoustic composer, cornetist, improviser and visual artist living in Chicago, Illinois. As a composer, Rob Mazurek has written over 300 original compositions over the past 30 years, and has released 55 recordings on various labels. He currently leads a number of ensembles, including Exploding Star Orchestra, Pharoah and the Underground (featuring Pharoah Sanders), Chicago Underground, Pulsar Quartet, São Paulo Underground, Skull Sessions, Sound Is Quintet, Starlicker, Mandarin Movie and Throne of the House of Good and Evil, each of which possesses its own distinct musical personality.

He has collaborated with a wide variety of artists, such as Bill Dixon, Pharoah Sanders, Mike Ladd, Roscoe Mitchell, Yusef Lateef, Fred Anderson, Naná Vasconcelos, Mamelo Sound System, Kassin and Marcelo Camelo and others. Additionally, Rob Mazurek works as a visual artist (incorporating sound, painting and video) with numerous international performances, exhibitions and artist residencies."