The lovely Keum Sae-rok and the dashing Steve Sang-hyun Noh may have already won acclaim for their acting chops---she for "Youth of May" and "The Fiery Priest," he for "Pachinko" and "Curtain Call"---but they have not played the main leads in their respective projects until the K drama series, "Soundtrack #2," came along. In the six-part Disney+ show, which began streaming last Wednesday (with two new episodes every week), ex-sweethearts Do Hyeonseo (Sae-rok) and Ji Suho (Sang-hyun) are reconnected four years after they decided to end their six-year relationship. Upon his doctor's orders, the overworked Suho, now the CEO of his company, must hire a piano tutor as part of his mo...Keep on reading: Lead stars step up to ‘Soundtrack #2’s’ exciting new challenges