Every OST track released from SBS drama series 'Phantom' has consistently swept the charts, and the formal OST album has officially been released.

Idol group MBLAQ lent their voice to sing the title song "Phantom (We Were Both In Love)", a medium-tempo track with a concise and appealing orchestra-led melody. The song is a project by Kim Ji Soo, the producer of Busker Busker and Ulala Session's new albums.

This song is stirring much interest, as it showcases the wide musical range of idol group MBLAQ who until now has chosen to perform strong electronic dance hits.

Check out the track below!