The term 'MUSIC SAMPLER' is a job description for someone who creates a demo, which is a four-letter word. A music sampler is a person who creates a demonstration of a song or album to showcase the artist's work. They use samples from the original recordings and mix them together to create a unique sound. The music sampler will also add effects and other elements to the track to make it stand out. The end result is a demo that can be used to promote the artist's work.