The Greeks appreciated all the arts, including music. Historians know, thanks to paintings and scriptures, that the Greeks played harps, amongst other instruments that they made to amuse themselves. Music was often incorporated in theatre.
Despite what people believe, relationships between same genders were very common. Achilles and Patroclus, Alexander and Hephastion are just some examples. It was very common for someone to take a lover that was of the same gender as them.