Are the type of glasses you wear when you watch a 3d movie; a red filter covers one eye; a blue filter covers the other. when viewing a 3d film with these glasses, your brain creates a 3d effect.

Where does middle c get it’s name? a. it sits in the middle of a brass clef b. it sits in the middle of the grand staff c. if sits in the middle of the alto clef d.its sits in the middle of the treble clef