I've heard a few mashups with "The Final Countdown", but this is probably the best one I've heard:
Vallset 2004 / Oslo 2004 / Vikafestivalen, Mo i Rana 2007 / Midnattsrocken, Lakselv 2008 / Døgnvillfestivalen, Tromsø 2011 / Midnattsrocken, Lakselv 2012 / Sweden Rock Festival, Norje 2013 / Tysnesfest, Tysnes 2013 / Stockholm 2014 / Oslo 2015 / Stockholm 2016 / Hamar 2022 / Tons of Rock, Oslo 2022 / Sweden Rock Festival, Norje 2023 / Oslo 2023 / Stockholm 2023 (2x) / Stockholm 2024 / Tons of Rock, Oslo 2024 / Bergen 2024