Pink Floyd became a favourite in the underground movement, playing at such prominent venues as the UFO club, the Marquee Club and the Roundhouse.
It was originally hoped that Barrett would write for the band with Gilmour performing live, but Barrett's increasingly difficult compositions, such as "Have You Got It Yet?", which changed melodies and chord progression with every take, eventually made the rest of the band give up on this arrangement.
Once Barrett's departure was formalised in April 1968, producers Jenner and King decided to remain with him, and the six-way Blackhill partnership was dissolved.
The band formed Blackhill Enterprises, a six-way business partnership with their managers, Peter Jenner and Andrew King.
In 1968, guitarist David Gilmour joined the band to carry out the playing and singing duties of Barrett, whose mental health was deteriorating, but nevertheless was intended to remain as the band's figurehead and songwriter.
Once Barrett's departure was formalised, Jenner and King decided to remain with him, and the six-way Blackhill partnership was dissolved.