John Basso has seen concerts during 21 years.

Year   Concerts Seen  
2023 2 concerts
2022 1 concert
2021 1 concert
2019 2 concerts
2018 1 concert
2016 2 concerts
2015 2 concerts
2014 1 concert
2012 1 concert
2010 1 concert
2008 2 concerts
2007 1 concert
2005 1 concert
2004 1 concert
2000 1 concert
1984 1 concert
1983 1 concert
1980 1 concert
1979 1 concert
1978 5 concerts
1974 1 concert