You know you are in good hands when the legendary Korean performer Rain takes charge. That's the case with MBLAQ, a K-pop boy band he assembled just as hallyu was taking off worldwide. The quintet wooed listeners with a mix of surging dance pop and R&B-tinged slow numbers that felt like the singers were whispering right into your ear. Although two members eventually stepped away to focus on solo activities, MBLAQ remains capable of galloping pop tunes followed closely by intimate crooners.