Keith Moon was an influential English musician, best known as the drummer for the rock band The Who. Renowned for his unique, complex and flamboyant drumming style, Moon was instrumental in defining The Who's sound and establishing them as one of the most significant bands in rock music history. Besides his musical contributions, Moon was also known for his eccentric and often destructive behavior, earning him the nickname "Moon the Loon". His work on notable albums such as "Tommy" and "Quadrophenia" has left a lasting legacy in the world of rock music.