👉 A concertizer is a type of musical instrument that uses two or more strings to create a musical sound. They are often used in orchestral and chamber music, as well as in various other genres of music. Concertizers are typically made from a single piece of wood, such as a bass or cello, and are usually played using a stringed instrument such as a guitar or violin. The strings are connected to each other through a series of pegs or fingers, allowing the player to