Gentle Giant - In A Glass House: Their existentialist masterpiece?

This week, Tim discussed the fifth album by Gentle Giant, In a Glass House. Topics covered are: the band being dropped by their record label, whether the band is a prog band or a ‘sublimated pop band', the complexity of the band’s playing and writing and their relationship with the missing brother and how it affected the theme of the album. Also, had the band read Jean-Paul Sartre? What happened when the band supported Black Sabbath? Why the hell did they make Giant For A Day? How did Kant define the Enlightenment? And finally, who were The Moles?