Heidi Hammond has seen concerts during 12 years.

Year   Concerts Seen  
2022 5 concerts
2020 1 concert
2019 1 concert
2018 3 concerts
2017 4 concerts
2016 4 concerts
2015 5 concerts
2014 1 concert
2013 1 concert
2012 2 concerts
2011 2 concerts
2010 1 concert