This week we have Grammy award winning rock band The Mars Volta on the show. Hailed by The New Yorker as "perhaps the most musically adventurous act currently signed to a major label", The Mars Volta formed in 2001. Tackling themes such as abandonment and addiction the guys have just released their brand new fifth album Octahedron. They have an impressive reputation for live performances (having supported the Red Hot Chili Peppers in the past) and we'll be finding out how their special outdoor show at Somerset House was received. Guitarist Omar and lead singer Cedric come in to reveal all.