Mike Kostecke has seen concerts during 19 years.

Year   Concerts Seen  
2024 2 concerts
2023 1 concert
2016 1 concert
2012 1 concert
2011 1 concert
2010 1 concert
2009 1 concert
2002 1 concert
1997 1 concert
1991 1 concert
1990 1 concert
1988 3 concerts
1984 2 concerts
1981 1 concert
1980 1 concert
1978 1 concert
1977 1 concert
1976 1 concert
1974 1 concert