Tchaikovsky's Swan Lake finale, as conducted by Karajan or Yablonsky.
Wagner's Tannhäuser suite, as conducted by Solti.
Swan Lake's finale is sophisticated, both delicate and passionate.
Tannhäuser finale is powerful and profound.
Swan Lake touches on love, passion and devotion.
Tannhäuser touches on sin, atonement and redemption.
In both cases the characters break free from the material world and transcend to the heavens. They both carry a stoic -and of course heroic- significance.
Edit:
I couldn't leave without mentioning this masterpiece...