Personalized Treble Clef Sing Music T-shirts Women's Plus Size T-Shirt. ocal Musician Treble Clef Women's Plus Size T-Shirt - White 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. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)