Pizzicato is a technique used in string instrument playing where the musician plucks the strings with their fingers instead of using a bow. This method creates a distinct, sharp sound that can add variety and texture to the music. It is commonly used in pieces for instruments like the violin, cello, and double bass. In orchestral music, pizzicato can be used for special effects or to create a lighter, more playful atmosphere. Composers like Wolfgang Amadeus Mozart and Igor Stravinsky have incorporated pizzicato in their works, showcasing its versatility and unique sound.