Heather Marshall has seen concerts during 15 years.

Year   Concerts Seen  
2023 14 concerts
2022 6 concerts
2018 1 concert
2015 2 concerts
2014 1 concert
2013 4 concerts
2012 1 concert
2010 1 concert
2005 1 concert
2004 1 concert
2003 8 concerts
2002 9 concerts
2001 8 concerts
2000 2 concerts
1998 1 concert