Vocaloid Megurine Luka / Awesome Music

"Arisen Anew" by Joren "Tensei" de Bruin is the theme of Aradia from Homestuck. Combines Homestuck, Vocaloid, Doctor Who, and (believe it or not) My Little Pony, in one big awesome dance tune.
"ARPK" by baker with lyrics by Muu seems like a great song with sub-par vocals. That is, it does until you realise said vocals were made with Luka's English voicebank and that it complements the theme of a Tsundere Alpaca perfectly due to the softer tone of voice.
Sailor Enlil's cover of Vonda Shepard's "Baby Don't You Break My Heart Slow" sounds rather cute.
"Bird in a Cage" by CompT with lyrics by Cloud, a beautiful, touching song.
"Blackjack" by Yucha-P and kaichi. Accompanied by an amazing guitar.
"Boy and Girl of the Fragile Type", a passionate techno-rock song from Fatman-P.

"Caoin". Everything that Seiko writes is beautiful, but check out this song, one of her beautiful fictional-language operatic pieces.
Circus-P's "Circus Monster" is a creepy but beautiful song about a monster who's abused by her captors in a circus.

"Dancer in the Dark" another fantastic song by Fatman-P and this time Luka sounds natural with her English voice.
Agoaniki-P's "Double Lariat" isn't only an awesome song, the lyrics are totally motivating.
"Dreameater on the Sand" by Hachi is completely heartwarming.

"Erase My Story" by Katakuna-P, a stylish electro-house song with an upbeat tempo. Luka's vocals are clear, well-tuned and easy to understand, perfectly complementing the pristine-sounding instrumental.
GMF159's cover of "-Error", with nice acoustic effects.

EZFG's "Glucagon" is an intense electro-rock track, coupled with awesome visuals.

"Hello/How Are You", as covered in English by Luka, shows her English at its best.
"Identify your 愛Dee" by ColorfulHorizonsP is a parody of MitchieP's "Ai Dee", in which Luka manages to do a good impression of GlaDOS.

MJQ's "If You Really Know" is a very soothing original English Luka song.
"Into the Old Forest -Poem of the End-", a beautifully ethereal, fantasy-like song.

Try "Just Close Your Eyes". Anything by metal band MentaiRocker is excellent, heavy with great riffs. The softness in Luka's voice blends beautifully with the smooth distortion of the guitarwork. The choruses are just gorgeous, whereas the intros and verses contain a gritty, dirty guitar tone that just plain works with Luka's voice: opposites very much attract. Plus, this band has outstanding programming, with the only indications of her artificial nature - beyond the inhuman beauty of her voice - occurring when she sharply changes pitch.
"King Lear of California" has an easygoing swing and casually erotic lyrics, showcasing liam and Lo-Fi Suicide's ample talent.

"Lie" by Circus-P. A potent Tear Jerker, cranked up by its PV (made by the guy who did the animations in Katawa Shoujo). Surprisingly Good English, too.

"tHELifeLess" by KeitA is a dark rock song interspersing heavy guitar sections with a sadder piano piece. The lyrics have Luka as a literal killing machine pondering her own bleak existence and wondering why humanity makes so many machines like her.

And now she even covers, of all songs, Suzanne Vega's famous song, "Luka". Someone made a cover of this lyrically dissonant pop song with Luka introducing "herself" by name.
Samfree brings to you his crowning jewel in his Night series: "Luka Luka★Night Fever", an incredibly upbeat and high energy Eurobeat tune that is all but guaranteed to make you wanna dance along.

"Mary and the Picture Book" by KurozumiP, a tearjerking song based on the horror adventure game Ib and sung from the point of view of Mary. Be warned, it contains spoilers for the game.

From the creator of songs like "Dreamin' Chu Chu" and "shake it!" comes the incredibly underrated "milky way", a beautiful song about Luka finding love under the stars and seeing her life transform for the better.

darkninjavn2011's cover of Celine Dion's "My Heart Will Go On" is so amazingly well done you'd think that wasn't even Luka's voice.
"My Night" by MJQ, a catchy English song with rather, suggestive lyrics.

"NEXT STAGE" by MuryokuP, a fast-paced techno beat and technological lyrics. (In)Famously known for a certain boss in I Wanna Kill the Kamilia 3.
"Nightbird" by Eyes, a song that's also an arrange of Mystia Lorelei's theme, "Deaf to all but the Song". The dark tone fits well both Luka's voice and Mystia's character.
JimmyThumb-P's "No Logic" is a motivating and realistic song which is just addicting.

Nanashi's cover of "Popipo", which shows she can be pretty energetic herself. Also check out Tako Luka version by seer.

"Russian Roulette". No, not a Rihanna cover, but an original song by Owata-P that plays up Luka's sex appeal.

"Sakura Graffiti" has a nice traditional sound, and RaimeiP makes good use of Luka's higher vocal range.

MilkmanConspiracy's cover of TLC's "Waterfalls". Yet another case of Surprisingly Good English. With the original voice of Lisa "Left Eye" Lopez doing rap.

Powapowa-P's "Zinnia and Meme". Apart of his series "Story of 'Zinnia and Meme'", it's a sad yet heartwarming song about the titular Zinnia bidding farewell. The song is an ambient, downtempo track with gentle tuning and instrumentation. Even more awesome is its Remodel version, in which Luka's voice is completely retuned and the instrumental is remastered.

Awesome Music / Vocaloid Megurine Luka