21 Gun was started in the summer of 2005 by Dan Alm and Adrian Serrato. Dan had already been playing guitar for a year and Adrian had just started playing. Soon after the creation of this band Dan had to move away for a few months.
It looked like the band wasn't going to work but then Adrian found Keith Cury, an old friend who had just started playing drums. They jammed together and realized they had a great chemistry.
Following this jam, they started practicing every weekend and making their own songs. They then decided to look for a bass guitarist to join the band. A school friend, Tyler Hovan, became part of the band. A few practices later, the three of them finished the bands first original song and played it at their school talent show and end of the school year celebration.
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