Unsolvable has seen concerts during 13 years.

Year   Concerts Seen  
2024 6 concerts
2023 7 concerts
2017 1 concert
2015 1 concert
2014 1 concert
2013 2 concerts
2011 2 concerts
2010 3 concerts
2009 3 concerts
2008 8 concerts
2007 7 concerts
2006 6 concerts
2005 1 concert