I repeat my post from the 'Turd de France' thread where Krankle dragged this same bullshit idea into the Lance Armstrong debate:-

Some of us abhor drug-abuse by anyone for any reason, including musicians who 'used drugs to connect with their inner muse'. My drug, in my early musical life, was alcohol. After a gig where I thought my alcohol-fuelled playing and singing had reached new, astronomical heights of brilliance, a band-mate whose talent I held in high regard told me, "The only person who thinks you play better when you're pissed-up is you!"