The first gig, late '60s, was with a few school chums of a younger brother, I played 'bass' using the low strings of my newly-acquired Hofner President into a Watkins Westminster combo. The repertoire was rather 'folky', with a couple of 'originals' (composed by Martin Spicer, who gave his name to the Martin Spicer Band...), notably the Apple Tree Warbler song, with the predictable chorus of...
'I'm a merry little Apple Tree Warbler'
'Who warbles in the apple trees all day.'
'It's because I'm a merry little Apple Tree Warbler'
'That I'm so happy and gay.'
We followed this with our version of the Airplane's 'Fat Angel' and a rather Grateful Dead-inspired instrumental that went on for quite a while. No drums, just acoustic guitars and my 'bass'; I don't remember there being any sort of PA or such, just us grouped into a corner of a pub opposite the tube station, Hounslow East. I think we got paid £5, and left the publican and his clients rather bemused by what they had experienced. It didn't take me long to decide to play drums ...