Well, we got Snap, Crackle, and Pop...but which one's which? The elves are in costumes- the baker, the music bandleader, and the generic elf with the pajama stocking hat. Use this visualization trick to correctly identify the elf:
"GingerSNAPs" - Bakers bake gingersnap cookies so SNAP is the Baker
"POP Music" - Music is related to bandleaders, so POP is the Bandleader
"CRACK of dawn" - CRACKLE is wearing a pajama hat, so he wakes up at the crack of dawn.