There are several artists with this name, including:
1) Nashville based alt-indie artist Gatlin
2) American hardcore band from Sarasota, Florida.
3) MA Hardcore band that used to be called Re//Issue.

1. Singer-songwriter Gatlin
2. American hardcore band from Sarasota, Florida
Check out the band’s bandcamp or facebook for downloads
3. MA Hardcore band that used to be called Re//Issue: http://gatlinmusic.bandcamp.com/