After yet another failure to get their cutie marks, the Cutie Mark Crusaders return to their clubhouse in low spirits and no ideas to test out
But after an incident involving a song with a mysterious magic to it, Sweetie Belle finds fate thrust upon her that no one expected.

Note: This has no correlation with the novel by Rosalyn McMillan which I have not, and probably will not read.
And yes, the cover is drawn by me.