Gemma O'neill has seen concerts during 14 years.

Year   Concerts Seen  
2020 1 concert
2019 5 concerts
2018 8 concerts
2016 1 concert
2015 2 concerts
2014 4 concerts
2013 1 concert
2011 3 concerts
2006 1 concert
2004 1 concert
2003 1 concert
2002 3 concerts
2001 5 concerts
2000 2 concerts