Dua's voice

Finally, Walter found what he was looking for and pulled out a small handheld device looking like an iPod from out of the heap of clothing on the floor.

"And now, watch me for the changes!" he said while still making no effort to exit his bent over state anytime soon.
For seconds, he fiddled with the device when suddenly...

"And, did it work?" it came from her in a flawless rendition of Dua's voice.

"Dad!?" Peter asked to make sure.

"Yes, son! But if I wasn't a singer, I would be a fairy princess!" she giggled.