A fiddler is a musician who plays the fiddle, a string instrument similar to a violin. Fiddlers often perform in various styles, including folk, bluegrass, and country music. They use techniques like bowing and plucking to create lively and rhythmic sounds that are popular in traditional and contemporary music settings. Fiddling has deep roots in many cultures around the world, with each region having its own unique style and repertoire. Famous fiddlers, such as Mark O'Connor and Natalie MacMaster, have contributed to the popularity of fiddling by showcasing its versatility and emotional expression in their performances.