Treble Clef Sunglasses - Treble Clef Sunglasses For Music Themed Costume Glasses measure 5 1/4 inch across the frame 5 1/2 inch from temple to ear. The treble clef glasses are a perfect gift for your music lover. TTreble clef glasses are a fun accessory for any band or choir to wear at a performance. Complete your Halloween costume with killer costume accessories. Going for the rock star look, these glasses are the perfect costume accessory!