Released in March 1999, Blur's sixth studio album "13" saw them drift further from Britpop. Albarn's lyrics – more heartfelt, personal and intimate than on previous occasions – were reflective of his break-up with Elastica frontwoman Justine Frischmann, his partner of eight years. Recording for Blur's next album began in London in November 2001. Not long after the sessions began, Coxon left the group. Coxon stated "there were no rows" and "band just recognised the feeling that we needed some time apart". "Think Tank", released in May 2003, was filled with atmospheric, brooding electronic sounds, featuring simpler guitar lines by Albarn, and largely relying on other instruments to replace Coxon. The guitarist's absence also meant that "Think Tank" was written mostly by Albarn. Its sound was seen as testament to Albarn's increasing interest in African and Middle Eastern music, and to his control over the group's direction. "Think Tank" was another UK No. 1 and achieved Blur's highest US position of No. 56. The album was also nominated for best album at the 2004 Brit Awards.