 The Jones @-@ produced sessions started in April 1969 at EMI Studios . After the first of these sessions , Barrett brought in friends to help out : Humble Pie drummer , Jerry Shirley and Jokers Wild ( Gilmour 's old band ) drummer , Willie Wilson . For the sessions , Gilmour played bass . Talking to Barrett wasn 't easy , said Jones : " It was a case of following him , not playing with him . They were seeing and then playing so they were always a note behind " . A few tracks on the album feature overdubs by members of the band Soft Machine . During this time , Barrett also played guitar on the sessions for Soft Machine founder Kevin Ayers ' debut LP Joy of a Toy , although his performance on " Religious Experience " ( later titled " Singing a Song in the Morning " ) was not released until the album was reissued in 2003 . One time , Barrett had told his flatmate that he was going off " for an afternoon drive " . However , he followed Pink Floyd to Ibiza ( according to legend , he skipped check @-@ ins and customs , ran onto the runway and attempted to flag down a jet ) . One of his friends , J. Ryan Eaves , bass player for the short @-@ lived but influential Manchester band " York 's Ensemble " , later spotted him on a beach wearing messed @-@ up clothes and with a carrier bag full of money . At this point , during the trip , Barrett had asked Gilmour for his help in the recording sessions . 
