Derek Denunzio has seen concerts during 11 years.

Year   Concerts Seen  
2018 1 concert
2017 2 concerts
2014 1 concert
2013 1 concert
2012 3 concerts
2011 2 concerts
2010 2 concerts
2009 1 concert
2008 1 concert
2006 1 concert
2005 2 concerts