Mattjennoco has seen concerts during 21 years.

Year   Concerts Seen  
2024 2 concerts
2023 5 concerts
2022 2 concerts
2019 5 concerts
2018 1 concert
2017 1 concert
2016 1 concert
2014 1 concert
2012 2 concerts
2009 1 concert
1995 1 concert
1994 2 concerts
1993 1 concert
1992 1 concert
1990 1 concert
1989 4 concerts
1988 8 concerts
1987 6 concerts
1986 4 concerts
1985 2 concerts
1984 1 concert