The Return of the Music Meister A BTBATB Fanfiction

The Music Meister has escaped Arkham after his debut in Gotham was ended abruptly by batman, and is back in the opera house he once called home. He's about to go out on the stage and play his organ but when he gets to the belfry he hears the most beautiful voice accompanied by almost hypnotic organ playing. when this beautiful song slowly dies off what does he do? He jumps on to the stage to find out who the woman behind it is of course! What comes after this meet and greet is a duet he has oh so waited longingly for...