Willi has seen concerts during 15 years.

Year   Concerts Seen  
2024 2 concerts
2023 9 concerts
2022 14 concerts
2020 4 concerts
2019 13 concerts
2018 12 concerts
2017 8 concerts
2016 7 concerts
2015 1 concert
2014 1 concert
2013 5 concerts
2012 2 concerts
2011 2 concerts
2010 1 concert
2009 1 concert