Audi famam illius. (Hear the fame of that one!) Solus in hostes ruit (Alone he rushed into his enemies) et patriam servavit. (and saved his country.) Audi famam illius. (Hear the fame of that one!) Cucurrit quaeque (He ran,) tetigit destruens. (destroying everything he touched.) Audi famam illius. (Hear the fame of that one!) Audi famam illius. (Hear the fame of that one!) Spes omnibus, (Hope to everyone,) mihi quoque. (also to me.) Terror omnibus, mihi quoque. (Fear to everyone, also to me.) Ille (That one) iuxta me. (is near to me.) Ille iuxta me. (That one is near to me!) Socii sunt mihi. (They are allies to me,) qui olim viri fortes rivalesque erant. (Those who were once strong men and rivals.) Saeve certando pugnandoque (And by contesting and by fighting fiercely) splendor crescit. (Surely our splendor grows.)
In addition to its own music, the Super Smash Bros.. series has a habit of taking older music tracks and making them awesome, whether they already were or not. The entirety of Brawl's soundtrack alone could count considering it featured the largest number of videogame composers to work together on a single game.
Note: If the music is unchanged from its original game, then put it in its relevant section of Awesome Music, not here.
The target test track from Melee. Watch the comments on pretty much any Youtube video with that song. You get at least ten people complaining about how that song isn't in Brawl. Considering how awesome it sounds, that's understandable.
Skyworld is also very majestic and adventurous rendition of the Overworld/World 2-theme from Kid Icarus, reimagining about the heroic sidescroller part on land after the painful beginning that is Underworld.
While Gourmet Race is often the track used for Kirby in Smash, the closest thing to a main theme the series has is Green Greens.
Gourmet Race. As a thrasher-metal song. Several commenters mention that Kirby must've swallowed Guitar Hero at some point. note The version uploaded by SilvaGunner before his account deactivation had over 1 million views, to put the song's awesomeness in perspective.
Have you noticed that in that theme they used electronic accordion and bongos to emulate the feel of the NES soundbits from Kirby's Adventure tracks anyway? Try to listen for this for an example. You need to have very good ears for to hear the bongos similar to the remix, though.
It's the Title Theme from the first Kirby game!!! They didn't forget about Kirby's Dreamland after all!!
Every hardcore Kirby-fans will easily love Boss Theme Medley, which takes all the best tunes throughout Kirby's history of battles and throws it into awesome medley fest. Particularly the first four (Adventure, Dreamland 2, Super Star and Kirby 64) is sure to give goosebumps of Kirby-gaming nostalgia.
Tal Tal Heights, which is actually a mix of the Link's Awakening overworld and the actual theme of the same name, is possibly the best of the many overworld Zelda remixes.
Ocarina of Time Medley, a mix of the six main tunes Link can play on his Ocarina, is pure nostaliga for Ocarina of Time in song form. Melee also had Saria's Song by itself, which unfortunately wasn't retained for Brawl.
Song of Storms. An amazingly epic remix of Windmill, Ganondorf's Theme, and the Serenade of Water. If anything, the first 3-4 seconds of the song, that INTRO, should tell you the epic you're in for.
Vs Ridley is nothing short of raw, unmitigated badassery in musical form.
The remastering of the original Metroid's ending theme. Especially epic because it plays when you beat the final boss in Classic or Boss Battle mode as Samus. Delicious chills shooting straight into your soul, man.
Melee's version of Brinstar Depths is just amazing. Especially when the melody hits the second repeat and the drum track kicks in.
Melee had the theme for Fourside, which is also notable for being the only track that originates from Earthbound/Mother 2, rather than Mother 1. For some reason, this theme not only didn't return for Brawl, but a handful of Earthbound tunes were considered for Brawl but not put in!
At least the second half of Earthbound's Eight Melodies has endured as Ness's victory fanfare - oh, wait, no, he and Lucas share a victory theme taken from Mother 1 in Brawl. More of a Wall Banger when you realize that Meta Knight has his own unique variation of the Kirby victory theme play when he wins.
The Underwater Theme, which takes a classic, and gives it two remixes along with the original all in one track!
Title/Ending (Super Mario World) is a tearjerkingly happy overture for ones who owned Super Mario World as their first Mario-game, composed of catchy beginning, and is carried onto bittersweetingly composed fast-tempoed ending theme.
Mario Kart DS has the already kickass Waluigi Pinball. The Brawl remix gives it a techno-speedup overhaul, along with mixing in themes that would later be used in Wario Land: Shake It.
And if you are more of a fan of Chill than Fever, Brawl has this for you!
Princess Peach's Castle. The best way to kick off Melee's Adventure Mode. Perhaps the coolest thing about this song is how it so clearly introduces itself as the main theme, but uses the underground theme as the bass line, essentially combining the two most recognizable Mario songs into one, and rounding off each repetition with the breakdown from the underground theme.
Shaberu! DS Cooking Navi might be the most unknown theme of all in the whole of Brawl's library, note being a medley of title theme (at the beginning), main theme (in two segments, another coming after the instruction theme) and the cooking/recipe instructions theme at the middle where the character talks from a electronic cookbook application for DS, released only in Japan (back then), but you can't help admitting it's also the one of most magical tracks in the game.
Ice Climber, a medley of the two main music tracks from said game. The harp-led transition from the energetic title screen theme music to the easygoing level music is a particular highlight.
Project M gets accidental Awesome Music; if you try to play through the Subspace Emissary, it's easy to get lost in the adventure and forget you're playing a mod. And then you get to the Rayquaza battle... Bam. You get Nostalgia Bombed by the Saffron City 64 theme. It really helps you wind up and truly get into a pokémon battle.note This is an accident because the normal music track is "Victory Road", the default theme for the Spear Pillar stage. In Project M, Spear Pillar was overwritten with Saffron City.