I do wonder whether the hippie with the 'cello case was the inspiration for how Stargate: SG-1's Dr Daniel Jackson turned out – that character does look very much like him in both the (original) James Spader and (subsequent) Michael G Shanks versions.
My favourite lines from the song are, perhaps predictably (knowing my penchant for word-play)
Though life is hard to takeHere we go...
I shan't quake or shake
I've got the rock to make me bo[u]lder!