Soul singer Al Green has given his thoughts on Barack Obama's version of his hit 'Let's Stay Together,' saying that he "nailed it."

The President will most likely breathe a sigh of relief as his "terrific" impromptu verse of the classic song went viral and had everyone talking about his vocal abilities.

Green told TMZ: "I was thrilled that the President even mentioned my name, and if the President can get the economy going again and get everything going that he wants to, then we'll all be together."

Obama was giving a speech at the Apollo Theatre in Harlem on Thursday night, when he broke out into song.

What did you think of Obama's voice? Watch it in the clip below...

Barack Obama tops Essence's most influential list...