Berlioz - Symphonie Fantastique, V. Witches' Sabbath (Mother 3 Soundfont)
"He sees himself at a witches' sabbath, in the midst of a hideous gathering of shades, sorcerers and monsters of every kind who have come together for his funeral. Strange sounds, groans, outbursts of laughter; distant shouts which seem to be answered by more shouts. The beloved melody appears once more (1:32), but has now lost its noble and shy character; it is now no more than a vulgar dance tune, trivial and grotesque: it is she who is coming to the sabbath... A roar of delight at her arrival (2:05)... She joins the diabolical orgy... The funeral knell tolls (2:38), burlesque parody of the Dies Irae (3:05), the dance of the witches (5:04). The dance of the witches combined with the Dies Irae (8:05)."
-Hector Berlioz
As an added note to those interested, the famous Gregorian chant "Dies Irae" has been quoted by many other composers aside from Berlioz, even to this day. However, his "parody" of it (which in most performances comes across as menacing rather than humorous) is still the most famous, even being used to great effect as the main theme of Stanley Kubrick's classic horror film, The Shining.
Symphonie Fantastique, Op. 14
V. Dream of a Witches' Sabbath
Composer: Hector Berlioz
Soundfont: Mother 3
I. Reveries – Passions: https://www.youtube.com/watch?v=9deKqs-MfMY
II. A Ball: https://www.youtube.com/watch?v=goASJR6ekuM
III. Scene in the Fields: https://www.youtube.com/watch?v=4ONHvjNrmMo
IV. March to the Scaffold: https://www.youtube.com/watch?v=yYhhpplDLoI
Pokémon Mystery Dungeon 2 version: https://www.youtube.com/watch?v=CKwJ9K8SQ7o