When it comes to blending dreamy concepts, stellar vocals, and stunning visuals, WJSN (Cosmic Girls) truly live up to their name. Since debuting under Starship Entertainment and Yuehua Entertainment in 2016, this K-pop girl group has continuously amazed fans with their cosmic concepts, powerful performances, and enchanting music videos.
Whether you’re a longtime UJUNG (WJSN fan) or a newcomer exploring their music for the first time, this list of the ten most popular WJSN songs and MVs (music videos) will take you on a magical journey through their universe.
1. BUTTERFLY
- YouTube MV Views: Approx. 25 million (as of 2025)
- Release Date: June 9, 2020
Released in 2020, “Butterfly” is one of WJSN’s most mesmerizing songs both visually and musically. The track perfectly represents transformation, freedom, and self-discovery, which are all recurring themes in the group’s artistic universe.
The music video feels like a moving piece of art. With graceful choreography, pastel aesthetics, and symbolic butterfly imagery, WJSN delivers a message of hope and growth. Their movements are synchronized yet soft, embodying the elegance of butterflies taking flight.
Vocally, “Butterfly” stands out for its ethereal harmonies and layered production. The dreamy synth-pop sound, combined with the members’ delicate voices, creates a feeling of floating through the sky.
It’s not just a fan favorite; it’s also considered one of their most visually striking MVs, capturing WJSN’s signature “fantasy meets reality” vibe perfectly.
2. SAVE ME, SAVE YOU
- YouTube MV Views: Approx. 19 million (as of 2025)
- Release Date: September 19, 2018
Next up is “Save Me, Save You,” a defining moment in WJSN’s career. Released in 2018, this song from their WJ Please? album became an instant fan favorite.
The music video is full of mystery and fairytale-like visuals. With magical books, secret rooms, and elegant uniforms, it almost feels like stepping into a fantasy school straight out of a dream. The concept beautifully matches the song’s theme of longing and emotional connection.
Musically, it’s pure WJSN magic: smooth synth lines, dreamy melodies, and perfectly balanced vocals. The chorus hits with emotional power, while the verses maintain a gentle, mysterious tone.
“Save Me, Save You” remains one of the most iconic WJSN songs for its cinematic storytelling and emotional depth, two things that make fans fall in love with their artistry again and again.
3. UNNATURAL
- YouTube MV Views: Approx. 17 million (as of 2025)
- Release Date: March 31, 2021
When WJSN released “Unnatural” in 2021, it was clear the group was evolving. They swapped their cosmic fairytale vibe for a more elegant, urban chic aesthetic. And it worked beautifully.
The music video oozes sophistication: sleek visuals, confident styling, and smooth choreography. It showcases WJSN as confident women who aren’t afraid to step into a more mature sound and look.
Lyrically, the song explores the idea of feeling out of place or “unnatural” while trying to express emotions, a theme that’s surprisingly relatable.
With a catchy chorus, polished production, and killer visuals, “Unnatural” showed just how versatile WJSN can be. It’s no wonder this track continues to be one of their most popular and most-streamed.
4. Secret
- YouTube MV Views: Approx. 17 million (as of 2025)
- Release Date: August 17, 2016
You can’t talk about WJSN’s success without mentioning “Secret.” This 2017 release marked a turning point that established their “cosmic fairy” identity in full force.
The music video is breathtaking, filled with starry skies, dreamlike sets, and magical imagery. It captures the essence of WJSN’s unique charm: ethereal, elegant, and slightly mysterious.
The song itself is pure perfection. “Secret” blends shimmering synths, emotional lyrics, and layered harmonies to create a sense of wonder. The chorus is hypnotic, and the members’ vocals shine from start to finish.
“Secret” became a signature song for WJSN, helping them gain recognition for their distinctive sound and visuals. Even years later, fans still call it one of the most iconic WJSN music videos ever made.
5. I Wish
- YouTube MV Views: Approx. 16 million (as of 2025)
- Release Date: January 4, 2017
Released in 2017, “I Wish” is one of those songs that perfectly captures WJSN’s dreamy and sentimental side. It’s a follow-up to “Secret” in both tone and theme, but slightly brighter and more hopeful.
The music video feels like a fairytale come to life. Set in pastel worlds with fantasy-like scenery, it follows the members as they chase after magical signs and destiny. Every shot feels like a painting, full of emotion and delicate detail.
Musically, “I Wish” combines soft synth-pop with bright melodies and an uplifting chorus. It’s emotional but not overly dramatic, just the right amount of magic and melancholy.
This track has a special place in fans’ hearts for how it perfectly encapsulates the “Cosmic Girls” identity: sweet, mysterious, and full of heart.
6. As You Wish
- YouTube MV Views: Approx. 16 million (as of 2025)
- Release Date: November 19, 2019
If there’s one WJSN song that everyone listens to on New Year’s Eve, it’s “As You Wish.” This track has become a yearly tradition in Korea, as many believe listening to it brings good luck for the new year.
Released in 2019, the song carries a message of hope, dreams, and destiny. The music video captures a magical winter fantasy, filled with glittering lights and soft visuals that match the hopeful tone of the lyrics.
Sonically, “As You Wish” is one of WJSN’s most anthemic songs. The chorus is addictive and uplifting, and the harmonies are absolutely beautiful.
This song isn’t just popular for its meaning; it’s become a cultural moment, with fans and non-fans alike streaming it every year as part of their New Year’s celebration. Truly timeless.
7. Last Sequence
- YouTube MV Views: Approx. 12 million (as of 2025)
- Release Date: July 5, 2022
“Last Sequence” marks WJSN’s return after their Queendom 2 win, and it’s a stunning display of confidence and artistry. Released in 2022, this track combines elegance with power, perfectly reflecting WJSN’s growth as performers.
The music video is breathtaking, filled with shimmering oceanic themes, glittering outfits, and graceful yet bold choreography. Each scene feels cinematic, showing the group’s evolution from dreamy fairies to mature queens.
Musically, “Last Sequence” has a modern dance-pop sound with deep basslines and emotional melodies. The chorus soars, and the members’ vocals are more polished than ever.
This song proves that WJSN aren’t afraid to evolve while staying true to their cosmic essence. “Last Sequence” feels like both an ending and a new beginning, a perfect representation of their journey.
8. HAPPY
- YouTube MV Views: Approx. 11 million (as of 2025)
- Release Date: June 7, 2017
Time to bring some bright energy to the list! “Happy” is one of WJSN’s most cheerful and colorful songs, released in 2017 as part of their Happy Moment album.
The music video bursts with color, confetti, and fun carnival-inspired visuals. It’s a major contrast to their usual cosmic concept, but it works as it shows off their bubbly side and brings pure joy to fans.
Musically, “Happy” is a high-energy dance track filled with bright synths, energetic beats, and an infectious chorus. It’s impossible not to smile while watching or listening.
While WJSN are often known for their dreamy, mysterious concepts, “Happy” proves they can pull off cheerful, upbeat vibes just as well. It’s the kind of song that instantly boosts your mood.
9. Dreams Come True
- YouTube MV Views: Approx. 8.5 million (as of 2025)
- Release Date: February 27, 2018
Released in 2018, “Dreams Come True” is one of WJSN’s most uplifting songs, both lyrically and visually. It’s all about believing in yourself and holding onto hope, even when things get tough.
The music video perfectly mirrors that sentiment: full of pastel tones, dreamlike imagery, and heartwarming energy. It showcases WJSN’s delicate yet powerful presence, making it one of their most emotionally resonant releases.
The track itself features lush harmonies, smooth production, and a bright, hopeful chorus. The blend of fantasy and positivity makes it one of the group’s most comforting songs.
“Dreams Come True” reminds listeners why WJSN’s music feels so magical; it’s not just pretty, it’s emotionally healing.
10. Boogie Up
- YouTube MV Views: Approx. 7.6 million (as of 2025)
- Release Date: June 4, 2019
Last but definitely not least, “Boogie Up” brings pure summer fun! Released in 2019, this track captures a completely different side of WJSN: carefree, playful, and energetic.
The music video is full of sunshine, beach scenes, and laughter. It’s a refreshing break from their usual fantasy concepts, showing that the members can shine just as brightly in simple, feel-good settings.
Musically, “Boogie Up” is an upbeat pop song with retro influences. It’s light, catchy, and perfect for summer playlists.
Fans loved seeing WJSN relax and just have fun, and the song quickly became a seasonal favorite. It’s the perfect track to wrap up this list, reminding us that even in their most casual moments, WJSN still shine like stars.
Conclusion
From “Secret” to “Last Sequence,” WJSN has built a musical universe unlike any other. Each comeback shows a new side of their artistry, whether it’s the dreamy fantasy of “Butterfly,” the elegant confidence of “Unnatural,” or the heartwarming positivity of “Dreams Come True.”
Their music videos are just as important as their songs, offering stunning visuals that tie into their cosmic narrative. Together, they create a world that feels both magical and relatable, a perfect mix that keeps fans coming back.
As WJSN continues to evolve, one thing remains constant: their ability to make every song feel like a journey through the stars.
