Sean Na Na is the guitar pop project of Sean Tillmann (who also performs as Har Mar Superstar). The project started as a solo outlet for Sean's songs that did not quite fit with his noise band Calvin Krime in 1993. Since then, the project evolved into a full band with a rotating cast of characters from all over the musical map. Tillmann's debut single under the moniker of Sean Na Na was "Two of the Same Name", released in 1998.