Various - Flex Your Head

Bass - Bert Quiroz (tracks: A4 to A6, A14 to A16) , Brian Gay (tracks: A12, A13) , Chris Stover (tracks: B5 to B7) , Ian MacKaye (tracks: A1 to A3) , Rob Moss (tracks: B11 to B13) , Terry S.* (tracks: B14 to B16) , Toni Young (tracks: B1 to B4) , Wendel Blow (tracks: A7 to A9, B8 to B10)
Drums - Brendan C.* (tracks: B14 to B16) , Danny Ingram (tracks: A14 to A16) , Dante Ferrando (tracks: B8 to B10) , Jeff Nelson (tracks: A1 to A3, A10, A11) , Marc Alberstadt (tracks: A12, A13) , Mike Manos (tracks: B11 to B13) , Rich Moore (tracks: A4 to A6) , Sean Finnegan (tracks: B5 to B7) , Simon Jacobsen (tracks: A7 to A9)
Drums, Noises [Farm Sounds] - Tomas Squip Ravioli* (tracks: B1 to B4)
Engineer - Don Zientara (tracks: A7 to A16, B5 to B7, B11 to B16) , Steve Carr (tracks: A1 to A6, B1 to B4, B8 to B10)
Guitar - Bubba Dupree (tracks: B5 to B7) , Chris C.* (tracks: B14 to B16) , Eddie Janney (tracks: A4 to A6) , Geordie Grindle (tracks: A1 to A3) , John Barry (4) (tracks: A12, A13) , Lyle Preslar (tracks: A10, A11) , Mark Haggerty (tracks: B8 to B10) , Michael Hampton (3) (tracks: A7 to A9) , Peter Murray (2) (tracks: B1 to B4, B11 to B13) , Tom Clinton (tracks: A14 to A16)
Producer - Skip Groff (tracks: A7 to A11)
Vocals - Alec MacKaye (tracks: A4 to A6) , Eric L. (tracks: B1 to B4) , Henry Garfield (tracks: A7 to A9) , Ian MacKaye (tracks: A10, A11) , John Stabb Schroeder (tracks: A12, A13) , John Weiffenbach (tracks: B5 to B7) , Nathan Strejcek (tracks: A1 to A3, A14 to A16) , Ray H.* (tracks: B14 to B16) , Sab Grey (tracks: B8 to B10) , Steve Polcari (tracks: B11 to B13)