As some would say, "everything in moderation", or - more medically - "the dose makes the poison".
I figure some of you may have personal experience with friends or family members, but alcohol is one of the worst drugs as far as dependence goes. Only the abuse of prescription benzodiazepines (i.e. Xanax, Valium) are as bad when it comes to physical dependence - quitting alcohol should be done with the help of a doctor, because unlike other, even "harder" drugs, such as cocaine, MDMA, or even painkillers - quitting alcohol can have serious health consequences up to death when done unsupervised.
The enhancing effects of drugs on music are relatively well-known, though. Even those attending a classical concert may enjoy a few glasses of wine beforehand. of course, this is to say nothing of music which is almost explicitly written to be consumed with drugs....