Today in 1969, Pink Floyd took part in a five-day festival which was originally planned for Paris, but eventually moved to Amougies, Belgium, with the event taking place in a large circus tent. Frank Zappa was one of the two compères, and performed with many of the acts during the festival. Here's the almost 14 minute Interstellar Overdrive collaboration between Zappa and the Floyd: youtu.be/_2Z1itZKH6U?feature…

56 years ago today, Pink Floyd's Atom Heart Mother was released in the UK, becoming the band's first number one album. The album's cover was famously hated by EMI, seemingly having nothing to do with the band or the music within, but the picture of Lulubelle III - taken nears Potters Bar. Storm Thorgerson said of the image: "I think the cow represents, in terms of the Pink Floyd, part of their humour, which I think is often underestimated or just unwritten about."