Usher Raymond was all smiles as he was spotted celebrating his 34th birthday at a London nightspot last week.

Just days before, Raymond launched his latest video for “NUMB,” where he is shown dancing inside of a glass box.

When asked about the concept for the video, Usher explained:

You know, I live my life in a glass box and every move, everything that I do is kind of speculated or either spoken about in some way and I never really can speak about it myself.

This kind of gave me the opportunity to open up and just be vulnerable.

Chile I guess…. But as for his new gig on NBC’s “The Voice,” Usher’s not too keen on exposing any “vulnerabilities,” in fact, his ‘holier than thou’ attitude is reportedly rubbing the other judges the wrong way!

Details + check out behind the scenes photos from Usher’s first day on the job under the cut…

Usher and his fellow judges were spotted on the set of ‘The Voice’ as they taped new episodes last week.

Tapings began last Thursday and they wrapped up Sunday afternoon.

During those 4 long days, the cast and crew filmed two episodes daily, with plenty of talent performing for the entertainers in order to put together teams for the show.

Usher & Shakira take their seats on ‘The Voice’ set…

Sources say that Shakira is delightful and giddy… and she actually dances around on the set but Ursher seems to be taking his classic superstar attitude of “I’m the KING”…

His personality just isn’t vibing with the other judges! I don’t know what it is. Maybe it’s just that “superstar” mentality of his, but he came on the set and immediately took over.

He acts like he runs things and as far as I know, he’s just a temporary cast member.

Maybe his personality will mesh as the show continues…. some things take time, right?

On a related note, check out Usher’s recent performance on UK’s Graham Norton Show, where he hit the stage with ‘Scream’….

FULL PHOTO GALLERY