All the artists I've seen live !!!
Sonata Arctica * 9 times (2000 / 2001 / 2003 / 2007 / 2008 / 2010 / 2011 / 2012 / 2014)
Iron Maiden * 7 times (1999 / 2000 / 2000 / 2003 / 2006 / 2008 / 2011)
Stratovarius * 6 times (2000 / 2000 / 2003 / 2010 / 2013 / 2013)
Gamma Ray * 5 times (2001 / 2008 / 2010 / 2013 / 2014)
Symphony X * 4 times (2003 / 2007 / 2008 / 2011)
Dream Theater * 4 times (2007 / 2012 / 2014 / 2014)…