Resonator guitars are a type of string instrument designed to produce a loud, bright sound. They use a metal resonator cone, instead of a traditional wooden body, to amplify the vibrations of the strings. This design makes them popular in genres like blues, bluegrass, and country music. These guitars come in various styles, including single cone and tri-cone models, each offering a unique tonal quality. The resonator cone is typically made of metal, which contributes to the guitar's distinctive sound. Players often use fingerpicking techniques to enhance the instrument's resonance and projection.