For the first time since early July, more Americans approve of the job President Barack Obama is doing than disapprove, according to a new Reuters/Ipsos poll that shows his approval rating now at 50 percent. Reuters

The White House was transformed into an intimate blues club on Tuesday night when a concert featuring some of the greatest living blues legends of past, present and future gathered for a concert.

Stars such as Mick Jagger, B.B. King, Jeff Beck and more were jammed in the East Room of the White House on a night dubbed In Performance at the White House: Red, White and Blues.

At the end of the concert, Obama was invited on stage to sing Sweet Home Chicago, the popular blues standard released by Robert Johnson in 1937.

Obama was convinced to sing by blues guitar legend Buddy Guy. I heard you sing that Al Green [song], said Guy. You started something, you gotta keep it up now.

Jagger handed his microphone over to Obama.

Obama smiled and sang along.

Come on, baby don't you want to go, sang Obama. Come on, baby don't you want to go. The president handed off the microphone to B.B. King, who helped the commander-in-chief.

Back to the same 'ol place, B.B. King said.

Sweet Home Chicago, sang Obama.

He handed the microphone off to someone on stage and exited the room. The band carried on, jamming to the blues standard. After going one more time through the chorus, the show ended.

This music speaks to something universal, Obama said earlier in the evening. No one goes through life without both joy and pain, triumph and sorrow. The blues gets all of that, sometimes with just one lyric or one note.