It is poignant and it rocks. It is something that only Pink Floyd was doing so effectively at the time. Yep, you caught me.

Barrett’s drug abuse eventually rendered him useless, and by the time Pink Floyd released their 1973 masterpiece ‘The Dark Side of the Moon,’ he was long gone and they had evolved into one ...

Pink Floyd guitarist and co-vocalist David Gilmour ... meaning cocaine. "There was a time when I was letting things go, ...