Amhranai

As he wandered through the endless void, Amhranai found Nymhriu sleeping deeply, and, struck by her beauty, found himself compelled to give voice to the very first song. His voice roused her from slumber, and it's said that the God was so moved by her gaze that he sang the Fey into being, so she might never be alone, or fall again into such endless sleep.

Sonorus is the mortal syncretization of Amhranai, though at the exile of the Fey, he was scrubbed of all traces of their influence.