In honor of the announcement of a return to the Mario & Luigi Series (thank goodness it's alive!), and in commemoration of my birthday, enjoy this B2W2 mix of the final battle from Partners in Time - now in a Black 2 and White 2 soundfont!

MIDI ripped directly from the game's files.
Prepared in Synthfont and mixed in Audacity.
Artwork created by yamari_in_6363 on Instagram, go show them some love
  / yamari_in_6363