Stephen Lee "Steve" Klein is an American musician and record producer. Klein was a founding member of Florida rock group New Found Glory, for whom he was the primary lyricist and rhythm guitarist.
Having formed New Found Glory with frontman Jordan Pundik in 1997, Klein performed on seven of the band's eight studio albums. Klein also contributed guitar to the bands now defunct alter-ego side project, The International Superheroes of Hardcore, where he was known under the pseudonym of "Mr. Mosh". Klein made his production debut in 2011, on Man Overboard's self titled second album.
When writing lyrics for each of the bands album's, Klein has explained that he simply tries to "capture a different time period in our lives".
The band made an announcement via Facebook on December 12, 2013 that Klein was no longer in the band, due to "personal differences." Following this announcement, New Found Glory revealed that they would begin searching for a replacement. However, they ultimately decided to continue as a quartet