Grin was an American rock band active from 1969 to 1974, led by the distinctive vocal style and guitar work of Nils Lofgren, a musician later known for his contributions to Bruce Springsteen's E Street Band. Their music incorporated elements of rock, blues, and folk, with notable tracks like "White Lies" demonstrating their signature sound. Despite the band's relatively short lifespan, Grin's influence can be seen in the work of later rock and folk musicians. Their fusion of genres and Lofgren's unique musicianship have secured their place in rock history.