Another gorgeous slice of quintessentially British psychedelia that you have never heard before. So many bands, so much fabulous music!
I came across this via Hawkwind's track 'Seven By Seven' which is a bit of a reworking of this riff. Fab music.
From Wiki :
The Mike Stuart Span was a British 1960s pop band consisting of Stuart Hobday (lead vocals), Brian Bennett (lead guitar, vocals), Roger McCabe (bass guitar, vocals), and Gary Murphy (drums). Their critical reputation is based almost exclusively on the merits of a handful of rare or unreleased recordings. In 1969 they briefly changed their name to Leviathan, before splitting up.