Robbin Crosby (1964-2002) was an American musician best known as the lead guitarist and co-founder of the glam metal band Ratt. Formed in 1976, Ratt became prominent in the 1980s, contributing significantly to the rise of the hair metal genre. Their music combined elements of hard rock and heavy metal, characterized by catchy hooks and guitar-driven sound. Crosby's notable works include Ratt’s breakthrough albums, *Out of the Cellar* (1984) and *Invasion of Your Privacy* (1985), which featured hit singles like "Round and Round" and "Lay It Down." The band achieved commercial success and played a pivotal role in shaping the glam metal scene alongside contemporaries like Mötley Crüe and Poison. Crosby's guitar work and songwriting contributed to Ratt's signature sound, influencing a generation of musicians. However, he faced personal struggles, including battles with substance abuse. After Ratt's decline in popularity in the 1990s, Crosby remained involved in music but struggled with health issues until his death in 2002. Despite his challenges, Crosby is remembered for his contributions to rock music and the glam metal era.