I've just found this photo which is from around 1964. The only faces I recognise are William "Bill" Barnett, Owen "Jack" Ryder, and on trombone, Rob "Drac" Hills. It's certainly before my time, 1965-70. Rob was our band leader for the first few years in the school band, but the other faces, while some are familiar, were a few years older.
I'm not proud of how this picture came into my possession, I actually pinched it from CDP's darkroom in the corner of the main hall, so I know it was produced at the school on the Gnome enlarger, sorry CDP.
Can anyone come up with any other names?