Grin may refer to multiple artists.

1) An early 70s American rock band best-known for featuring Nils Lofgren on guitar;

2) An independent alternative rock band based in Chicago, now known as Quasar Wut-Wut.

1) Grin was an early 70s rock group based in the Washington D.C metro area whose debut release came out in 1971 on the CBS/Spindizzy Label. The group featured a 19-year-old prodigal alumni of Walter Johnson High School in Bethesda, MD, that being Nils Lofgren on guitar. By their fourth album they were on A&M records, this disc was called "Gone Crazy" and was produced by David Briggs, also known for his work with their pal Neil Young. The song Beggar's Day from this album was also covered by Nazareth. When Grin dissolved in 1974, Lofgren went on to play with Crazy Horse and also Bruce Springsteen's E Street band. He's also had a prolific solo career.

2) Grin was the original name of an independent, Chicago-based band Quasar Wut-Wut. They produced one album, Fizzle Out and Fly Right, under that name, before realizing that it was already taken by the 70s group and changing it to Quasar Wut-Wut.

User-contributed text is available under the Creative Commons By-SA License and may also be available under the GNU FDL.