Maria Marcus co-wrote “World Wild Women” for South Korean girl group tripleS, released as the theme song for 1theK Badge War 4. The energetic track celebrates resilience, ambition and female empowerment, following tripleS as they turn challenges and setbacks into strength.

Maria also provided background vocals on the track, adding her vocal performance to the recording.

Written by Maria Marcus, EL CAPITXN, Vendors (Zenur), Arineh Karimi and Kristin Carpenter.

Maria Marcus co-wrote and produced “Hotter Than July,” performed by Swedish artist May Li as part of a campaign for Swedish fashion brand Gina Tricot.

The upbeat summer track combines contemporary pop and dance influences with a bright, feel-good energy, created to complement Gina Tricot’s fashion campaign.

Written and produced by Maria Marcus and Malin Christine Johansson.

Maria Marcus co-wrote “Undefined (CHAERYEONG),” a solo track performed by Chaeryeong of South Korean girl group ITZY. The song was released on ITZY’s 12th mini album Motto and explores the subtle tension of two people drawn to each other while their relationship remains undefined.

Maria also provided background vocals on the track, adding her vocal performance to the production.

Written by Maria Marcus, Lee Hae Sol, MINKYU and SEORA.

Maria Marcus co-wrote “$ECRET no more” for South Korean girl group Billlie, featured on their first full-length album the collective soul and unconscious: chapter two.

Inspired by Tchaikovsky’s Swan Lake, the song explores the moment when hidden emotions and carefully kept secrets begin to surface. Its mysterious, layered production and cinematic atmosphere fit seamlessly into Billlie’s distinctive storytelling and conceptual world.

Maria Marcus co-wrote “moonboy,” an international pop collaboration between American singer-songwriter JVKE and South Korean artist JEON SOMI. The dreamy, feel-good track blends JVKE’s distinctive pop sound with Somi’s vocals, creating a playful and romantic cross-cultural collaboration.

“moonboy” was released as a single on March 6, 2026, and was written by Maria Marcus, JVKE (Jake Lawson), Zachary Lawson, Hautboi Rich, ADILE and Kevin D.

Maria Marcus co-wrote “Born (本)” for dodree, the debut duo from JYP Entertainment’s INNIT Entertainment. Released as part of their debut digital single Just Like a Dream, the song blends cinematic pop with elements of traditional Korean music, creating a mystical and atmospheric sound.

“Born (本)” explores the idea of a fateful connection between two people — a bond where “you are mine and I am yours” — while also reflecting dodree’s own origins and the beginning of their journey as a duo.

Written by Maria Marcus, Andreas Öberg, Jake K, Nick Kaelar and YELO.

Maria Marcus and LineOut Sweden AB created the original music for Uppsala University’s “Inga Stormar”, combining contemporary production with a distinctly Swedish atmosphere. Written specifically for the film, the music complements its visual storytelling and helps shape its emotional character.

Maria Marcus co-wrote and recorded backing vocals on “Stone Cold”, performed by Mina as her solo stage during TWICE’s THIS IS FOR World Tour. The song was first introduced live during the tour in July 2025, giving fans the chance to experience Mina’s striking solo performance months before its official release.

“Stone Cold” became a standout moment in the show, showcasing a darker and more atmospheric side of Mina as a performer. The song was later released as part of TWICE’s special album TEN: The Story Goes On, bringing a memorable live performance to the group’s official catalogue.

Maria Marcus co-wrote two tracks for CIX’s GO Chapter 1: GO Together: the upbeat and energetic “S.O.S.” and the atmospheric “IN MY DREAMS”. The two songs showcase very different sides of CIX, from the driving energy of the opening track to the haunting, dreamy character of the EP’s closing song.

Maria Marcus co-wrote “La Vie En Bleu” for JOY’s first mini album From JOY, with Love. Blending elegant pop with bossa nova influences and French-inspired touches, the song brings out JOY’s warm, expressive vocal character and her ability to give a song a distinctive sense of emotion and atmosphere.

Maria Marcus co-wrote “PUT IT ON ME” for South Korean boy group EVNNE, featured on their fifth mini album LOVE ANECDOTE(S).

The funky pop track combines old-school funk elements with a modern sound and channels EVNNE’s carefree, high-energy attitude. The song’s playful message is all about going beyond limits, letting go of worries and putting the energy on EVNNE.

Written by Maria Marcus, Christian Fast and Hwan Yang.

Maria Marcus co-wrote “Waffle” for South Korean boy group EPEX, featured as the opening track on their third full-length album Youth Chapter 3 : ROMANTIC YOUTH.

The bold, rhythmic track takes a playful approach to dealing with unwanted opinions, interference and empty words, with “waffle” becoming a metaphor for the noise of other people’s expectations.

Written by Maria Marcus, AdamAlexander, Tobias Näslund and Christian Fast.

Maria Marcus co-wrote “Ice Tea” for WayV, released on the group’s seventh mini album BIG BANDS. An energetic English-language track with a playful, seductive edge, “Ice Tea” quickly became a fan favorite, with fans particularly praising its catchy chorus, performance and summer-ready energy.

The song was performed for the first time at WayV’s comeback showcase in Beijing, where it received an enthusiastic response from the crowd. A dance practice released shortly afterwards further highlighted the song’s choreography and performance appeal, with many fans calling for it to receive more promotion.

Maria Marcus co-wrote “Mood” for RESCENE’s second single album Dearest. The dreamy, atmospheric track showcases the group’s distinctive vocal blend and their ability to move effortlessly between delicate harmonies and more powerful moments.

The song was later given a special Clean Acapella release, putting RESCENE’s vocals front and center and allowing the intricate vocal arrangement to shine without the production. Maria Marcus also contributed background vocals and harmonies to the track.

Maria Marcus co-wrote “One 4 All”, a special team song created for MYERA. The song was unveiled as the emotional finale of the group’s first one-man live in Tokyo, celebrating the bond between the five members and their fans.