Yeah, Barrett's gone. Shame... If you want to taste the real acid damage, track down Magnesium Proverbs. (There are dozens of other, equally revealing Syd/Floyd boots. Find what works best for you.) "Scream Thy Last Scream" expertly lays the Madcap's lysergic topology bare.
In tribute, please download this 1924 recording of James Joyce reading an excerpt from Finnegan's Wake. (It will make sense to you sooner than later...)