Freedom Frogs

Once upon a time, there was a magical forest with singing frogs. *Carefully* you step into the forest when--.. *crunch*  You brutally murdered a hoard of innocent singing frogs. The forest's protector, the mushroom witch, shows up and is FURIOUS. HOW? HOW COULD YOU DO THIS? I'M TURNING YOU INTO A FROG UNTIL FURTHER NOTICE! YOU MUST COLLECT ALL PARTS TO FINISH A SONG WHILE ENDURING ALL THE FROG'S O…