Keo21 has seen concerts during 36 years.

Year   Concerts Seen  
2023 5 concerts
2022 1 concert
2019 6 concerts
2018 1 concert
2017 2 concerts
2016 4 concerts
2015 1 concert
2014 5 concerts
2013 2 concerts
2012 3 concerts
2011 3 concerts
2010 5 concerts
2009 1 concert
2008 1 concert
2005 1 concert
2004 1 concert
2003 4 concerts
2002 1 concert
2001 1 concert
2000 2 concerts
1999 1 concert
1996 1 concert
1995 1 concert
1990 1 concert
1989 1 concert
1988 1 concert
1987 4 concerts
1986 3 concerts
1985 2 concerts
1984 2 concerts
1983 3 concerts
1982 2 concerts
1981 5 concerts
1980 7 concerts
1979 7 concerts
1976 1 concert