Summer of Lore #22: The Song of Magic

 About the story:

This is a tale of one of the rare magic users that could sing magic outside of the Gemsinger and his/her companions--a minstrel (one of Dorian's ancestors) that led a human army to victory against the demon lord. This tale has been adapted as a play, and Dorian has played the title role

The basic bones of the story:

A minstrel (the name and gender differ depending on who is telling the story) discovers she can sing magic when she graduates from the minstrel's hall. After she spends some time honing her power, a thief sweet talks her into giving her instrument to him. When she realizes her mistake, she discovers after getting her instrument back (what it is varies from minstrel to minstrel) that the thief was in the service of the demon lord--and had the demon lord played it, he would have wiped out entire cities with it.

The minstrel warns the king, and the two sides meet for a climatic battle. In the end, her spellsong defeats him.