Mark Brost has seen concerts during 21 years.

Year   Concerts Seen  
2024 1 concert
2022 2 concerts
2019 1 concert
2017 2 concerts
2016 1 concert
2014 1 concert
2009 1 concert
2008 1 concert
2007 3 concerts
2006 1 concert
2005 2 concerts
2004 2 concerts
2002 3 concerts
2001 1 concert
1998 2 concerts
1997 1 concert
1996 2 concerts
1995 3 concerts
1994 4 concerts
1993 1 concert
1992 1 concert