Isaak has seen concerts during 13 years.

Year   Concerts Seen  
2021 1 concert
2019 7 concerts
2018 7 concerts
2017 3 concerts
2016 7 concerts
2015 3 concerts
2014 7 concerts
2013 2 concerts
2010 1 concert
2009 1 concert
2008 1 concert
2007 2 concerts
2006 2 concerts