My Sweet Piano (マイスウィートピアノ, Mai Sūīto Piano) is a Sanrio character, who debuted in 1976 as Hitsuji though she was renamed Piano in 2005.
She's My Melody's best friend. She is a sheep with soft pink fur covering her low ears, a round tail, white skin, and a yellow oval nose. Her personality is described as soft, kind, and girly. Her birthday is July 6th.