Heidi Lachenmaier has seen concerts during 16 years.

Year   Concerts Seen  
2023 1 concert
2022 8 concerts
2021 1 concert
2019 3 concerts
2018 3 concerts
2017 2 concerts
2016 5 concerts
2015 3 concerts
2014 4 concerts
2013 2 concerts
2012 2 concerts
2011 4 concerts
2010 5 concerts
2009 7 concerts
2008 5 concerts
2007 2 concerts