I blame Blair for this. 

Dick Grayson:

Barbara Gordon:

Jason Todd: (I can see Jaybird singing this.)

Blair Blake: (I love Panic! At the Disco too much.)

Damian Wayne:

Graybat:

Blair Todd:

I'm too lazy to pick a song for Tim, Steph, Cass, ect. Maybe I'll make a part two, but probably not.