Mark Arm is an American musician best known as the lead vocalist and rhythm guitarist for the influential rock band Mudhoney. Formed in 1988, Mudhoney played a significant role in the development of the grunge music scene in Seattle during the late 1980s and early 1990s. Arm's distinctive voice and energetic stage presence contributed to the band's success and lasting impact on alternative rock. In addition to his work with Mudhoney, Mark Arm has been involved in various side projects and collaborations, including the band Green River. He is recognized for his contributions to the Seattle music scene and continues to perform and record music, maintaining a dedicated fan base.