Sami Yaffa is a Finnish musician and bassist, best known for his work in the rock and punk genres. He gained prominence as a member of the band Hanoi Rocks, which was influential in the glam rock scene during the 1980s. Yaffa has also collaborated with various artists and bands, showcasing his versatility and talent. In addition to his music career, Yaffa has been involved in several projects, including The New York Dolls and Michael Monroe. His contributions to the music industry have made him a respected figure among fans and fellow musicians alike.