Gilmour said (in Guitar World, Feb. '93):
He's on three or four tracks on the album, including 'Remember A Day' and 'Jug Band [Blues].' He's also on a tiny bit of 'Set The Controls For The Heart Of The Sun.'
A February 1992 article in Record Collector also suggests he may have been on 'Corporal Clegg,' which is echoed in Schaffner's book. The "Crazy Diamond" book notes 'See Saw' as another possibility.