Complex sentence: Flight music is considered to be "Ride of the Valkyries" by Richard Wagner; that matches the Germanic feel of dogfighting Luftwaffe aircraft with the player's British and/or American Air Froce.
Split into simpler sentences: Flight music is considered to be "Ride of the Valkyries" by Richard Wagner. That tunes perfectly matches the Germanic feel of dogfighting Luftwaffe aircraft with the player's British and/or American Air Froce.