Noble and Metcalfe left the Tea Set in late 1963, and Klose introduced the band to singer Chris Dennis, a technician with the Royal Air Force (RAF). In December 1964, they secured their first recording time, at a studio in West Hampstead, through one of Wright's friends, who let them use some down time free. Wright, who was taking a break from his studies, did not participate in the session. When the RAF assigned Dennis a post in Bahrain in early 1965, Barrett became the band's frontman. Later that year, they became the resident band at the Countdown Club near Kensington High Street in London, where from late night until early morning they played three sets of 90 minutes each. During this period, spurred by the group's need to extend their sets to minimise song repetition, the band realised that songs could be extended with lengthy solos', wrote Mason. After pressure from his parents and advice from his college tutors, Klose quit the band in mid-1965 and Barrett took over lead guitar. The group first referred to themselves as the Pink Floyd Sound in late 1965. Barrett created the name on the spur of the moment when he discovered that another band, also called the Tea Set, were to perform at one of their gigs. The name is derived from the given names of two blues Musicians whose Piedmont blues records Barrett had in his collection, Pink Anderson and Floyd Council.