Drawing sound is pretty difficult, and I didn't think that an onomatopoeia would get things done correctly. Though I'm sure I'll learn to do better later, for now I'm pretty happy with how that last panel looks.
Saved by music notes!
Sound is a pretty awkward thing to convey in a silent medium sometimes. I think you got it quite well here actually!
Also, gotta love Susan's expression in the second panel. Like she's just now realizing that she doesn't have complete control of Anna anymore. Somehow I don't think that'll go over well with her.
She does look more taken aback than angry...
I like the music notes a lot!
Graaaah. There's a picture I want to share here, with like ffff dynamics on sheet music and some funny commentary, but I can't find it!
That was convienient.