I saw him on the Supernatural tour and it was a magical evening.
Funny thing about what you posted, he mentions it in the book. Jerry Garcia had slipped him a hit of mescaline and he ate it. The an hour later was told it was time to hit the stage. He imagined his geetar was a magical snake and it was breathing into his mouth.
Drugs, good drugs, nothing like it :)
I’ve seen a slightly different story about that from him. But it did include that they had to go on stage much earlier than he’d thought he would.
Oh well, “anyone who can remember the sixties wasn’t there”.