By all accounts, Willy Mason lives out of a van, which is currently stationed in California while he embarks on his European tour. Listening to his minimalist set packed with worldly, well-travelled gems, it certainly shows. It being his first Irish show, Mason is predictably a little tipsy (“Hell, I even drink like an American,” he drawls). Although he has become something of a media darling of late, he seems slightly disoriented by tonight’s rapturous reception.