Sean Na Na, a US alternative rock group originating from United States of America, was founded in 1993 by Sean Matthew Tillmann. Initially serving as a solo outlet for Tillmann's songs that did not fit with his noise band Calvin Krime, the project evolved into a full band featuring a rotating cast of musicians. The debut single under the moniker of Sean Na Na was "Two of the Same Name", released in 1998. In early 2000, Kill Rock Stars released a split EP with Mary Lou Lord and his full-length debut album Dance 'til Your Baby is a Man. The band's subsequent releases include My Majesty (2002) and Family Trees Or: CoPe We Must (2007). Notable members included Lucky Jeremy on keyboards, Ben Webster on drums, Patrick Costello on bass, and various other collaborators.