A "telefonon" is a type of musical instrument that belongs to the family of percussion instruments. It consists of a series of tuned metal bars that are struck with mallets to produce sound. The instrument is often used in orchestras and ensembles, providing melodic and harmonic support. The telefonon is similar to other instruments like the xylophone and marimba, but it typically has a more resonant and bright tone. It is commonly used in various music genres, including classical, jazz, and contemporary music, making it a versatile addition to many musical compositions.