Leighton Meester's first music video is almost here and we couldn't resist giving you a special sneak preview!

Leighton's music career is set to take off when her debut album is released this autumn, but first she's been warming up her vocal chords with Cobra Starship.

Singer Gabe Saporta is a huge fan of Gossip Girl and decided he just had to do a duet with Leighton. The pair then got to work on new single Good Girls Go Bad and shot the video of them having a laugh at the casino.

Gabe Saporta commented on their collaboration: "CAN YOU BELIEVE I GET TO DO A SONG WITH BLAIR WALDORF?! It's no secret that I am a HUGE Gossip Girl fan. (On tour, our fans bring me copies of the episodes I am missing so I can stay caught up),"

Mystically, the duet came from Gabe's dream - who knew he could see into the future! 

Gabe said:  "A couple months ago, I heard a rumor that Leighton was working on a record, and I went to sleep that night dreaming of what it would be like to do a song with her. Next morning (afternoon, actually) I wake up to find out my dreams are coming true! Some people made phone calls to some other people, then, shazam! I'm on a plane to LA to record with my boo. I knew I had the perfect song for her too: 'I Make Good Girls Go Bad.' "

We know that Blair is a bit of a bad gal, but did Cobra Starship corrupted the 'real life' Leighton Meester?  We'll just have to wait to hear her solo album to see if she's more like Blair or Leighton!

Watch this cool preview...

Are you loving Leighton and Cobra Starship's new single?  Will Leighton's music career really kick off or should she stick to acting?