AtHeart Kicks Off Time Travel Project Promotions with New Single 3!4! in Seoul

There is a venue naming discrepancy across outlets: some reports cite Rise Autograph Collection in Mapo-gu, Seoul, while others reference RYSE Autograph Collection in Seogyo-dong for the same event.
Article 5 notes that AtHeart formally announced the second single '3!4!' from the Time Travel Project and framed the showcase as a kickoff of promotional activities.
The coverage describes the event as a production presentation for both the multi-form drama '3+4!' and the Time Travel Project's new release, signaling a broader promotional package beyond a single performance.
AtHeart brought their Time Travel Project to Seoul on August 19, 2026, with a dual showcase at Rise Autograph Collection in Mapo-gu. The group performed '3!4!', the second single from their global remake series, and presented the multi-form drama '3+4!' to press and fans, according to Star News Korea.
Members Caitlin, Na Hyun, Bom, Michi, Seohyun, and Arin all took the stage. The event marked the official kickoff of promotional activities for the new release, Star News Korea reported.
The Time Travel Project is AtHeart's global remake series. It takes classic songs and rebuilds them with a modern sound. '3!4!' is the second single under that concept, following the series' debut release. Star News Korea described the project as reinterpreting classic hits 'with a contemporary sensibility.'
A notable creative detail drew attention at the showcase. Original song creator Lee Hyun Do participated directly in the arrangement of '3!4!'. That kind of original-artist involvement is rare and signals a deliberate effort to honor the source material while updating it.
The August 19 event was not just a music showcase. It also served as a production presentation for '3+4!', a multi-form drama tied to the same project. AtHeart packaged the music release and the drama reveal into one event, making it a broader promotional launch rather than a single performance.
The multi-form format of the drama suggests it spans more than one medium or platform. Details on episode count or release dates were not confirmed in the coverage, but the presentation signals that '3+4!' is a significant part of AtHeart's overall rollout strategy, according to Star News Korea.
Not every outlet agreed on where the event took place. Some reports named the venue as Rise Autograph Collection in Mapo-gu, Seoul. Others cited RYSE Autograph Collection in Seogyo-dong. The two names likely refer to the same physical location, as Seogyo-dong is a neighborhood within Mapo-gu.
The spelling difference — 'Rise' versus 'RYSE' — appears to be a transliteration issue rather than two separate venues. Still, the inconsistency is worth noting for anyone tracking the event's official details.
All six members of AtHeart appeared at the showcase. Caitlin drew particular attention from photographers, with Star News Korea publishing multiple photo features highlighting her performance and stage presence. Na Hyun and Bom also received individual coverage from the outlet on the same day.
The heavy photo coverage suggests the event was a well-attended media showcase. For AtHeart, the August 19 event sets the tone for what appears to be a sustained promotional campaign around both the '3!4!' single and the linked drama project.
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