Misc: He is known as 'The Father of Geometry'?

Questions

Pink Floyd: Which sci-fi author gave the title to PFs last album - The Division Bell?

Played banjo on Young's "Old Man"?

Played loud enough, this Clash triple album woke the whole neighborhood?

Played often enough, "Trust" by this artist turned parental hair white?

Pop Culture: Label bought by TVT, with KMFDM, Revolting Cocks, Coil, Thrill Kill Kult.?