Art Altenbach has seen concerts during 17 years.

Year   Concerts Seen  
2023 3 concerts
2022 1 concert
2021 1 concert
2018 1 concert
2014 1 concert
2012 1 concert
2011 1 concert
2001 1 concert
2000 2 concerts
1999 1 concert
1984 1 concert
1983 2 concerts
1982 2 concerts
1977 2 concerts
1976 3 concerts
1975 4 concerts
1974 1 concert