Personalized Treble Clef Sing Music T-shirts Toddler Dress. ocal Musician Treble Clef Toddler Dress - Natural with Stripes Show your love for singing with this fun choir or chorus design. It features a large treble clef sign with fun music themed Sing slogan. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!