Matt Jammy has seen concerts during 27 years.

Year   Concerts Seen  
2023 1 concert
2021 2 concerts
2020 1 concert
2019 1 concert
2018 7 concerts
2017 2 concerts
2016 3 concerts
2015 1 concert
2014 1 concert
2013 1 concert
2011 3 concerts
2010 15 concerts
2009 5 concerts
2008 6 concerts
2007 1 concert
2005 1 concert
2004 2 concerts
2003 2 concerts
2002 1 concert
2001 1 concert
1999 4 concerts
1998 1 concert
1997 2 concerts
1996 2 concerts
1994 1 concert
1992 7 concerts
1991 1 concert