Ralf Wittmer has seen concerts during 18 years.

Year   Concerts Seen  
2024 13 concerts
2023 7 concerts
2022 6 concerts
2019 1 concert
2015 1 concert
2014 1 concert
2013 1 concert
2009 1 concert
1999 2 concerts
1997 1 concert
1996 3 concerts
1995 1 concert
1994 3 concerts
1993 1 concert
1992 1 concert
1991 1 concert
1989 2 concerts
1988 1 concert