Think Tank is the seventh studio album by the English rock band Blur, released on 5 May 2003. Continuing the jam-based studio constructions of the group's previous album, 13 (1999), the album expanded on the use of sampled rhythm loops and brooding, heavy electronic sounds. There are also heavy influences from dance music, hip hop, dub, jazz, and African music, an indication of songwriter Damon Albarn's expanding musical interests.