Gregory Zimmer has seen concerts during 28 years.

Year   Concerts Seen  
2024 7 concerts
2023 8 concerts
2022 9 concerts
2021 3 concerts
2019 6 concerts
2018 10 concerts
2017 5 concerts
2016 3 concerts
2015 1 concert
2014 1 concert
2013 2 concerts
2012 1 concert
2011 2 concerts
2010 1 concert
2009 3 concerts
2005 1 concert
2003 2 concerts
2002 2 concerts
2000 2 concerts
1999 3 concerts
1998 1 concert
1997 2 concerts
1996 1 concert
1995 2 concerts
1994 5 concerts
1993 3 concerts
1992 4 concerts
1990 1 concert