Watch Sam Smith's Cover of Whitney Houston's "How Will I Know"

After gracing the live stage of Letterman with “Stay With Me” last night, Sam Smith made his return with a live rendition of a Whitney Houston classic. Hosted by SiriusXM Raido, the British singer took on Houston’s lovable tune “How Will I Know.” Stripping it of it’s original up-beat 80’s vibe, Smith delivered a touching performance where his vocal abilities were on vulnerable display except for the accompanying pianist. Check it out above and to digitally purchase his debut album, In the lonely Hour, you can click through to here.