Outward Spiral has seen concerts during 20 years.

Year   Concerts Seen  
2024 3 concerts
2023 3 concerts
2022 1 concert
2018 1 concert
2017 2 concerts
2016 1 concert
2014 1 concert
2013 2 concerts
2011 1 concert
2010 1 concert
2006 1 concert
2004 2 concerts
2001 1 concert
2000 1 concert
1999 3 concerts
1998 3 concerts
1997 2 concerts
1996 4 concerts
1994 1 concert
1987 1 concert