One of the most dynamic bass player/songwriters of his time, Chris is the only member of Yes who has been with the band since they formed in 1968.
A selection of songs made to be terrible - some clearly achieved that goal.
Genesis' key-man re-examines his solo career and the early days of music video.
The Def Leppard frontman talks about their "lamentable" hit he never thought of as a single, and why he's juiced by his Mott The Hoople cover band.
Kristian talks songwriting technique, like how the chorus should redefine the story, and how to write a song backwards.
From NKOTB to 1D, how well do you know your boy bands?