Frank Zappa: on being a curmudgeon, his daily news intake, Walt Whitman and Ice-T, replacing lazy musicians with technology.

Ahmir ‘Questlove’ Thompson: on crack as a driving force in hip-hop, the Yodas, taking turntables to Cuba, Joni Mitchell and Rakim.

Squarepusher: on learning from Aphex Twin, enjoying the music of Squarepusher, creating a gamelan orchestra, music worship.

Joe Strummer and Robert Fripp: on music as a driving force for social change, ABBA, Crimson vs. The Who, pinball.