Zooey Dechannel
It sounds an aweful lot like Ingrid Michaelson, but I'm not totally sure if its her that sings "Play, Laugh, Grow" for Fisher Price.
Stephanie from Lazy Town
Katharine Whalen most notably of the Squirrel Nut Zippers.
Adam Sandler - Grow Old With You
"play, laugh, grow"
Play. Laugh. Grow
The Pussy cat dolls
Grow a pear
Westlife, Adam Sandler.
no she does not
Childrens toys made by Fisher Price
The song is "Que Sera, Sera" (What will be, will be) originally from the 60s by Doris Day. Jennifer Terran is the singer of that particular version