Metamorphoses Book 11: The Death of Orpheus
While Orpheus had been singing his songs to the forest and its inhabitants, a group of Maenads, Bacchus' followers, found him and attacked. They ripped him to shreds, and his head and lyre (guitar) floated down river to the island of Lesbos, which later became known for its poetry. Bacchus turned the frenzied women into trees for their sins against Orpheus. Once his spirit went to the Underworld, he joined Eurydice.
Bacchus left the region and journeyed to Lydia to see old friends. He met up with his usual group, but Silenus, his old guardian, was missing. The old man had gotten lost, and ended up at Midas' court. Midas brought him back to Lydia.