After starring in Cincinnati Opera’s season-opening production of Mozart’s Don Giovanni, world-renowned baritone Elliot Madore takes to Music Hall’s Wilks Studio for “A Portrait of the Artist as a Middle-Aged Man,” an autobiographical evening of song. Through stories and music, Madore will illuminate the contrast between his everyday life as a middle-aged man with his chaotic, exhilarating, and sometimes exasperating career as an international opera singer.