Castle Lololo, the second stage song, while not as famous as Green Greens, has seen a recent surge in usage as Dyna Blade's theme, such as in Air Ride and Super Star Ultra though that much harsher version was first used in the recap of Kirby of the Stars' final episode ("Fly! Kirby of the Stars"), of the next-to-last episode ("Destruction! Nightmare's Huge Fortress").
Ripple Field is also a great catchy, if not relaxing tune in the same vein as Kirby Super Star's Float Island.
Another Ripple Field track has a sort of submerged sound to it, perfectly suitable for the underwater level in which it is first heard. It could also give Sand Canyon a run for its money in terms of catchiness.
Since it uses the previous melody in place of the classic Dedede Theme, Nightmare In Dream Land uses that melody in the Boss Tower instead, replacing the mini-boss battle melody used originally in that stage (see 2:47 onwards).
To put Brawl's "Gourmet Race" metal remix in perspective, the original version uploaded by SilvaGunner had amassed over a million views before it and the rest of her massive library of video game music was unfortunately taken down.
Its counterpart version for the Revenge of the King in Ultra is just as awesome. It's the same piece of music, but played in a much more somber tone during what has to be the most major Tear Jerker of the game and really helps evoke the emotion during the cutscene of King Dedede walking off into the sunset in defeat with his Waddle Dees still sticking by him loyally.
The epic sweetness of this tiny piece of music that plays during the cutscene after the Marx battle ranks way up there, too (It is followed by the normal "credits" music). That first bendy note that plays right on time with a huge, screen-whiteout (albeit SNES or DS-grade) explosion is just sweet.
Bonus points for the pacing of the song; if the player gets all hits in the first two passes, the song picks up just as she starts summoning enemies and changing the background color, which makes a nice compliment to it.
If any of the music reminds you of MOTHER 3 that's because it's by the same composer, Shogo Sakai.
The Squeaks make a surprise return, in a helpfulrole. Whenever Kirby boards their airship to ask Daroach for treasure info, there's a calm version of their leitmotif playing, sounding elevator music. It's actually quite relaxing.
Some of the best remixes can be found in the fan albums Concert of the Starry Sky and The Large Concert of the Starry Sky by doujin group salvation by faith records. One in particular is a full fledged original arrangement of the intro to Kirby Super Star: Magical Cosmic Tour by Yamajet.
A pretty well-known Kirby arrange album, Rise of the Star, has been around since 2005. It's loaded with tons of nostalgia fuel, and every single track is well worth a listen.
The credits for Kirby's Dream Collection is an amazing remix of the original credits of Kirby's Dream Land with a bit of Nutty Noon 5-2 thrown in. When the 8-bit part fades in, you'll be overwhelmed with the nostalgia.