The track came from an album featuring Peter Frampton, Rory Gallagher, members of Spooky Tooth and many more.
Procol Harum will headline the Prog In The Park Stage at the 2016 Ramblin' Man Fair in Kent next July, with Hawkwind among the other attractions.
Steve Hackett picks his top 11 prog albums for uDiscover and curates an exclusive top prog playlist.
The bands that recorded at Olympic Studios reads like a who’s who of popular music - The Beatles, Stones, Zeppelin, Queen, The Who, U2 - all worked there.
1969 was THE year of the festivals. Across North America and Britain there seemed to be one taking place somewhere almost every weekend during the summer.