 At the beginning of 1967 , Barrett was dating Jenny Spires ( who would later marry future Stars member Jack Monck ) . However , unknown to Barrett , Spires had an affair with Peter Whitehead . Spires convinced Whitehead ( who thought the band sounded like " bad Schoenberg " ) to use Pink Floyd in a film about the swinging London scene . So at the cost of £ 80 , in January , Whitehead took the band into John Wood 's Sound Techniques in Chelsea , with promoter Joe Boyd in tow . Here , the band recorded a 16 @-@ minute version of " Interstellar Overdrive " and another composition , " Nick 's Boogie " . Whitehead had filmed this recording , which was used in the film Tonite Let 's All Make Love in London and later on the video release of London ' 66 – ' 67 . Whitehead later commented about the band that : " They were just completely welded together , just like a jazz group " . 
