Berlin-based duo Leo and Jonas burst onto the scene in 2021 with their euphoric “Trance Dance Music” (TDM) style, a high-energy fusion of trance, Eurodance, pop tropes, and rave nostalgia that hits like a feel-good anthem. Building momentum with emotional, over-the-top DJ sets and tracks laced with melody and groove, their breakthrough moment came with their Boiler Room × AVA Festival debut in 2023, racking over 100K views in under a week, and earning them BBC Radio 1’s Future Dance Star nod. With festival main stages, sold-out club nights, the “Teenage Dreams” event series, and remixes for Romy and TDJ under their belt, DJ Heartstring define a new generation of dance music that’s grounded in sincerity, high bpm ecstasy, and communal joy.