A great deal of music by Philip Glass is being shared today on this, his 75th birthday. My contribution is “Hymn to the Aten,” from his third opera, Akhnaten, about a heretical Egyptian pharaoh and the birth of monotheism. For me, this is Glass’s most ravishingly beautiful piece, and countertenor Paul Esswood sings it gorgeously. The libretto is in Egyptian, Arcadian and Hebrew, but Glass directed that the “Hymn” be sung in the language of its audience; English was chosen for this CBS recording.