Can Philip Glass really be 80? He and his music possess a quality of youthfulness, of timelessness, that is entirely of our day while going beyond it into more mysterious, universal spheres. So distinctive is his voice, and so influential, that he has plenty of detractors. Minor arpeggios, incantatory melodies, interweaving motifs, a gradual progression of change… But take a closer look. Minimalism? No way.