Daniel J. Cowan has seen concerts during 18 years.

Year   Concerts Seen  
2023 2 concerts
2022 8 concerts
2021 2 concerts
2019 4 concerts
2018 1 concert
2017 2 concerts
2016 2 concerts
2015 3 concerts
2014 4 concerts
2013 2 concerts
2012 4 concerts
2010 1 concert
2008 2 concerts
2007 3 concerts
2006 1 concert
2005 2 concerts
2000 1 concert
1999 1 concert