Misc: How many tiles are there in a domino set?

Questions

Pink floyd followed up "dark side of the moon" with this release in 1975 whose title sounds like a note on a postcard?

Pink Floyd song : "I want to tell you a story/about a little man/if I can"?

Pink Floyd song: "You say the hill's too steep to climb"?

Pink Floyd: Besides drums, what else does Nick Mason collect?

Pink Floyd: David Gilmour's solo albums were self titled and this name.?