This is what it sounds like when you mix all the extra mission themes from Luigi's Mansion 2 together .

Gradual Infiltration (http://youtu.be/ErnL8ssW7eY)
Hostile Intrusion (http://youtu.be/KnRGs50QfmU)
Outlandish Interruption (http://youtu.be/kwmOSMttZtM)
Severe Infestation (http://youtu.be/d4prtmUbc38)
Terrifying Invasion (http://youtu.be/ptUXD2nLQ_c)