>>5869966As fare as I know the very first Elsa to have sound was the 17" Disney store singing light up Elsa. There was also an Anna, and they were the first 17" princess doll to not only sing but light up as well. She cost $40 in 2013 which was a $10 price increases form the 2010s 17" singing dolls which sold for $30. Now in 2016 all 17" singing dolls sell for for $50.
There was also a singing Mattel Elsa, but I believe she came out later.
Here's an image of the first three Disney Store Elsa dolls.
Left to right. 12" classic doll, Limited Edition 17" doll, and the 17" singing light up doll.
