Brianna Mahoney has seen concerts during 11 years.

Year   Concerts Seen  
2018 4 concerts
2016 2 concerts
2015 3 concerts
2013 3 concerts
2012 1 concert
2011 3 concerts
2010 1 concert
2009 1 concert
2007 1 concert
2005 2 concerts
2004 1 concert