Misc: Largest internal organ of vertebrates, weighing 3-4 pounds?

Questions

Pop Rock: Grateful Dead keyboards man who died of a drug overdose.?

Pop Rock: Group composed of Agnetha, Bjorn, Benny, & Annifrid.?

Pop Rock: Jimmy Page, Jeff Beck and Eric Clapton have all belonged to this band.?

Pop Rock: Name of the Pearl Jam album with a llama/sheep on the cover.?

Pop Rock: Rock star had big-screen debut in Hard To Hold.?