Pink Floyd: Obscured By Clouds (1972)

Heading back into classic rock land, here's one that sometimes seems to get overlooked. Pink Floyd are of course best known for their run of mega-selling concept albums from 1973's Dark Side of the Moon through 1979's The Wall (or maybe through 1983's The Final Cut if you're being generous); and their 1967 debut album Piper at the Gates of Dawn and contemporaneous singles with acid casualty Syd Barrett at the helm are legendary in their own right. But in between these two very different bands wa...