Hollyan has seen concerts during 20 years.

Year   Concerts Seen  
2024 22 concerts
2023 35 concerts
2022 25 concerts
2021 8 concerts
2020 2 concerts
2019 6 concerts
2018 2 concerts
2017 4 concerts
2016 10 concerts
2015 4 concerts
2014 3 concerts
2013 6 concerts
2012 4 concerts
2011 5 concerts
2010 6 concerts
2009 3 concerts
2008 3 concerts
2007 2 concerts
2003 1 concert
2001 1 concert