Rising K-pop group AtHeart has released the second single “3! 4!” from their global remake series, TIME TRAVEL PROJECT. The track is now available across all streaming platforms.
The new song perfectly balances Roo’Ra’s original music identity while capturing AtHeart’s bright melodic style. One of the original songwriters, Lee Hyun Do, participated in the new arrangement, bridging the connection between the two versions.
AtHeart’s version replaces the ukulele heard in the original intro with warm electric piano and delicate guitar arpeggios, creating a softer and more melodic atmosphere while maintaining the song’s upbeat spirit. The group’s seven members, Michi, Arin, Katelyn, Bome, Seohyeon, Aurora, and Nahyun, each bring their distinct vocal colors to the track.
Blending the nostalgia of 1996 with a contemporary 2026 sound, “3!4!” introduces the classic to a new generation while offering longtime listeners a fresh take on a familiar favorite.
The accompanying music video brings that same collision of eras to life visually, with AtHeart embracing styling inspired by the late 1990s and early 2000s. While previous releases have highlighted the group’s more powerful and performance-driven side, “3!4!” showcases a brighter, playful energy.
TIME TRAVEL PROJECT is AtHeart’s global remake series centered around songs originally released in 1996. Through the project, the group steps into the role of musical “time travelers,” revisiting influential songs from three decades ago and introducing them to today’s listeners through AtHeart’s own sound and perspective.
The series launched earlier this summer with “Say It,” which reimagined The Cardigans’ 1996 international hit “Lovefool.” With “3!4!,” AtHeart continues to expand the concept by turning to one of Korea’s most recognizable songs from the same year.
“3!4!” is available now worldwide.
