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Back in May, the two f(x) members worked with EDM artists�Reh3b�and�Xavi & Gi�for "Wave", released through 'SM Station'. They've now teamed up with�Ferry Corsten�and�Kago Pengchi to release "Heartbeat."

Amber and Luna will perform the song live during the�'SPECTRUM DANCE MUSIC FESTIVAL' at Seoul's Han River Park. Check out the MV above!