"ViViD" establishes LOONA's experimental, unique sound, and showcases HeeJin's voice that is elegant and jazzy despite her young age (merely 16 at the time to international viewers, 17 in Korean age).
"Around You" by HyunJin is soft, lovely, and heartfelt.
"Let Me In" and "Sonatine" are very atmospheric with their orchestral backings and dramatic vocals.
"Everyday I Love You" by ViVi is a feel-good love song buoyed by her delicate, sweet voice. Its mellow remix, "Everyday I Need You," is equally uplifting, both versions with their own merits (the original one a perfect track if you feel like dancing, the remix great for dreamier moods). Bonus points go to HaSeul's unexpected, but awesome rap in the original version.
After "ViViD", "Kiss Later" is perhaps surprisingly the most watched track from 1/3's era—YeoJin's voice is surprisingly stable for someone so young, and the lyrics and theme – about not being ready for love, despite the brand-new, growing feelings inside – are widely appreciated as something teenage girls should be able to hear.
"Eclipse" is well known for its addictive vocals and instrumentals and is known as a fan favorite. Even the National Aeronautics and Space Administration love the song.
Following that is JinSoul's "Singing In The Rain", which (up until Hi High shattered all records) had spent a long tenure as LOONA's most watched video. It's a badass future bass track that pushes her powerful voice to the limit.
"Love Cherry Motion" is a cute and happy song, but its two beatdrops make it so much more than that, allowing Choerry to showcase her grand versatility.
"new" is widely loved for its 80s influences, and introduced Soultronica to Korea.
"Heart Attack" is one of LOONA's catchiest songs, and the inclusion of Chuu as an unexpected power vocal blew many fans away. LGBTQ fans have also latched onto the song due to the lesbian themes in the music video, and it was voted the top LGBTQ power anthem at a Pride festival in Korea.
"One&Only" can be considered the anti-Heart Attack, with Go Won putting a soft, clear voice to use to bring the song to its true form. For even more fun, those who purchased the song online were able to hear her voice bounce from one ear to the other when wearing headphones, as it was mixed in 3D.
The beat drop in "Egoist" made it perpetually exciting, as did the rap by JinSoul that followed.
"Butterfly" is both experimental and very radio-friendly pop gold. It manages to make typically brassy elements like the classic electronic beat drop and whistle notes fit smoothly in a song with an extremely dreamlike, quiet beauty. The music video and choreography also complement the song perfectly, with the former a female empowerment clip for diverse kinds of women and the latter a gorgeous dance routine that's hard-hitting but meticulously designed and performed.
"Girl Front" is a standout track that not only melds together the three OEC girls' distinct styles with astonishing smoothness, but also attracts new fans like bees to honey. It's been used in viral memes (to the point that Vine successor TikTok now has an audio snippet of this song in its library) and played in shops, a common reaction being "I heard it in [X] and just had to find out what song this was." The prestigious American music magazine Billboard also included "Girl Front" in their "best K-Pop songs of the decade" list; at #42, the song has made them the magazine's highest-ranked rookies.
"So What" is a full-on girl crush concept for LOONA, which many have been itching to see. The choreography and video are stunning per usual, and it's brought some delightful surprises; like HyunJin finally receiving more lines and screentime and being able to demonstrate her exceptional vocal stability, and The Baby of the BunchYeoJin rapping. Special mention also goes to JinSoul's show-stopping belt during the final chorus, to which the whole song has been building up. When it arrives, it's positively killer, and equally astonishing when she performs her runs live. As a testament to how good it is, it got them their first win, too! Also, it's the first song Lee Soo-man of SM has ever produced for a group not under his label.
"favOriTe" didn't dress the members up in anything fancy or edgy, just normal school uniforms, yet showed just how badass these young girls can be. Few love songs sound this intense. The song also made Orbits sit down and notice JinSoul's vocals, if they hadn't before; in the bridge, she effortlessly belts out D5 notes.
"Hi High" brings a crazy spike of adrenaline, topped off by Chuu's legendary high note.
It wouldn't be a stretch to call "Uncover" ODD Eye Circle's most appreciated track. It nails Dream Pop even better than LOONATIC does, being soft and light enough to sleep to but upbeat enough to dance to.
"Chaotic" was originally going to be a title track for another group BlockBerry Creative were intending to debut, but it ended up given to ODD Eye Circle to help show off their vocal talent—which they do perfectly. "Starlight" features an avant-garde instrumental to great effect. These two are much loved within the Mix&Match era.
"D-1" is vocally challenging and haunting, especially with knowledge of the lyrics. It mixes a floating tone with a somber attitude to reel the listener in with Yves' beautiful voice.
"Love Letter" is an emotional duet between Kim Lip and Jinsoul, whose voices are perfect for each other.
"See Saw" is widely beloved within the fanbase, and for good reason. The song itself is beautiful, and the lyrics are very clever ("which is right I see or saw you / which is right I love or loved you").
"Rosy" is beloved for the high and low tilts of the singers' voices, which is rounded out by HeeJin's amazing rap. It is the b-side most often performed at LOONA's events, and Choerry and HyunJin even made their own choreography for it.
None of the tracks from beauty&thebeat were seen coming, but "One Way" was truly a surprise, as full-on ballad hadn't been done since 1/3's Sonatine. And yet it works: Yves and Chuu bring the right amount of power and Go Won and Olivia Hye bring the right amount of control to create a ballad that haunts the listener's ears and thoughts afterward.
"Oh (Yes I Am)" is another wonderful Self-Empowerment Anthem from LOONA that finally allows the Haseul's beautiful operatic voice to shine.
"Stylish" is theEnsemble Dark Horse of LOONA b-sides, with an extraordinary amount of ad libs, runs, voice layering, and ambitious vocals, with its signature first chorus appearing in complete acapella.
"Ding Ding Dong" is a refreshingly cute track in a mini-album mostly adhering to the girl crush concept. It features incredible vocals, however, reminding listeners that "cute" doesn't mean a weak song.
"Hide and Seek" showcases LOONA's duality again. The song has a youthful and playful charm, but also sneaks in shockingly seductive ad libs.
"Universe" is an ethereal ballad that will make you feel like you're floating in the air. The members themselves agree, calling it the most faithful of the 12:00 mini-album's tracks to "the LOONA sound."
"Voice" is a fan favorite. Each member gets the chance to sing and shine, with previously under-used vocalists like YeoJin, Go Won, and Olivia Hye being able to show off their chops. Its English version "Star" is also lovely, living up to the hype of LOONA finally releasing a song, as a group, in the language.
1/3's "You and Me Together" has an incredibly groovy bassline. Those who may be unhappy with how short the track is will be pleased to know there's actually a full-length version that runs for 3 minutes and 7 seconds.
Outside LOONA
Thanks to returning producing team Monotree, Odd Eye Circle's "Version Up" EP held the familiar LOONA-esque sound many older fans enjoyed and manage to showcase the member's more matured voices after so long.
Many fans were floored after LOOSSEMBLE's self titled debut EP dropped, namely thanks to the production team finally allowing the members' vocals to shine when many of them were underused under Blockberry.
; at #42, the song has made them the magazine's highest-ranked rookies.