Zach Dettmer has seen concerts during 19 years.

Year   Concerts Seen  
2024 1 concert
2023 4 concerts
2022 1 concert
2021 1 concert
2019 2 concerts
2017 3 concerts
2016 5 concerts
2015 2 concerts
2014 5 concerts
2013 3 concerts
2012 1 concert
2011 2 concerts
2010 3 concerts
2009 2 concerts
2008 1 concert
2007 5 concerts
2006 3 concerts
2005 4 concerts
2004 1 concert