What I'm listening to today: "Mystic Invasion" (Secret of Mana), Hiroki Kikuta
So in the first mana temple the peaceful-if-spooky "Whisper and Mantra" plays. Then you reach the second mana temple, which has been overrun by surreal monsters, and this dark, fusion-jazz variation on the temple theme plays instead.
Secret of Mana has kind of a nothing plot but it's really emotionally memorable!— In part because the soundtrack does so much of the heavy narrative lifting.