For ten points, name this Graeco-Roman deity, the son of Leto and sister of Artemis.
The Romans declared Borvo, the Celtic god of springs, and the Egyptian deity Horus equivalent to this god. To the Etruscans, he was a staffed god of thunder and lightening. The Greeks sometimes called him musagetes, believing that he directed the choir of the Muses. Deeds credited to him including slaying Zeus's cyclopeses, defeating two different satyrs in music contests, and giving King Midas ass's ears. The swan was sacred to him, having been present at his island birth. At the beginning of the Iliad, he brings a plague upon the Achaeans. For ten points, name this Graeco-Roman deity, the son of Leto and sister of Artemis.
The Romans declared Borvo, the Celtic god of springs, and the Egyptian deity Horus equivalent to this god.
{Apollo} or {Loxias} (or {Loxian Apollo})