BMK is short for Big Mama King, and she has a rich, soulful voice to match her mighty name. As a teenager, she studied classical and jazz vocal music, and her formal training still shows in her clear, bright vibrato and occasional falsetto. But the power of BMK's vocals isn't just a function of impressive technical skills. It's in the emotional charge she brings to her ballads, whether she's complementing classy piano and string arrangements or riding a smooth bossa nova rhythm.