Adam Lambert's latest return to American Idol has been previewed in a new promo clip.

The vocal powerhouse, who finished runner-up on the show in 2009, is set to return to US screens alongside fellow alumni Chris Daughtry and Randy Jackson.

They will mentor the TV talent show's contestants at a special summit.

A promotional video has now been released of the show and it sees Lambert help guide the wannabe stars.

The batch of new episodes are due to air from Tuesday (February 18).

Lambert meanwhile is set to have a busy 2014, with a new album release mooted and shows with Queen in the pipeline.