Amber and Luna release their music video for the next SM STATION track. The song “Heartbeat” is in both Korean and English and it features Ferry Corsten, Kago Pengchi and the vocals of the two f(x) members. Johnny of NCT/SMROOKIES can also be spotted DJing in the back. SM Entertainment says, “SM STATION’s new track “Heartbeat (Feat. Ferry Corsten, Kago…