Sean Spangler has seen concerts during 12 years.

Year   Concerts Seen  
2022 1 concert
2021 4 concerts
2020 1 concert
2019 10 concerts
2018 11 concerts
2017 11 concerts
2016 12 concerts
2015 10 concerts
2014 4 concerts
2012 1 concert
2010 1 concert
1999 1 concert