I have no experience with drugs but I do remember being told once that Neil Young and (maybe) David Crosby --- Young certainly --- came to their manager with what they said was the greatest ever song they had written. It was just fabulous. He would not believe it they said. He played it and all it was was Young hitting a cowbell for several minutes while they both giggled insanely.
Yup: they had been high when recording this "amazing music".. !
Or, to illustrate it the Seth MacFarlane way...