Echo was enjoying the sound of her music while she was experimenting with the extents of her power. She had studied and learned that low frequency sound can actually be used to damage someones internal organs without damaging the outer layers of flesh. She knew her power wasn't that great but she was very confident in her abilities. She was sitting outside the hall of Mercenaries. 

She had stepped away from the music store she maintained when she wasn't working with the mercenaries her powers while not the best front line abilities were very good at changing a course of a battle. She was currently bored out of her mind so she figured she might as well begin singing. So she proceeded to sing modifying her pitch to pitch perfect. While she began to sing she tossed her hat to the ground. [i]Might as well try for tips[/i]. She was singing the new absurdly popular song Let it go. While doing so she was using the bouncing noise created for echolocation mostly keeping an eye out for toad who like to steal her tips.