Think Tank is the seventh studio album by the English rock band Blur, released in May 2003. Jettisoning the Britpop sound of Blur's early career as well as the lo-fi indie rock of Blur (1997), Think Tank continued 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 lead singer-songwriter, Damon Albarn's expanding musical interests.