[quote=@Angel Eyes]
As you can see here, Emma had the ability to see sound as light. Similar to Dazzler from X-men. Using her Cello, she could not only entrance people while they were listening to her, but she could lure people to her by thinking about them as she was playing. This could be further amplified by something like a speaker, allowing her to lure a crowd of people to her. Additionally, she was able to use her ability offensively, by channeling the light produced from her cello and blasting it outward in an arc, like a concussive energy blast. Though, because a cello is a very large instrument, it wasn't something she could just use on a whim. 
 
[/quote]

Not going to lie, but totally where my mind went to as well XD