There are multiple bands named Long Gone:

1) Chicago pop punk band
Chicago-based Long Gone aim to evoke the nostalgic feelings of rolled-down windows on a bright summer day, using anthemic melodies, hard-hitting drums, and layers of catchy guitar hooks to put a modern twist on the Warped Tour era's finest sing-along pop punk.

2) FInnish metallic hardcore band
Long Gone is a metallic hardcore band from Hämeenlinna, Finland. They have released one demo tape called Demo MMXIV.

3) Californian rock band
Long Gone was also the name of a short lived California rock band in 1990 that released a demo and a video for the song Higher. The band most notably had Ralph Saenz as a lead vocalist, who would later go on to be the lead singer of Steel Panther. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.