Heidi Pierce has seen concerts during 15 years.

Year   Concerts Seen  
2023 1 concert
2022 1 concert
2015 1 concert
2011 2 concerts
2009 1 concert
1999 2 concerts
1994 2 concerts
1990 1 concert
1988 1 concert
1985 2 concerts
1984 1 concert
1980 1 concert
1978 1 concert
1976 1 concert
1975 1 concert