A show that takes a peek behind the scenes at GLAAD's 21st Annual Media Awards features singer Adam Lambert and actress Drew Barrymore.

The hour-long special, titled The Advocate On-Air: The GLAAD Media Awards Special, premieres Friday on all-gay cabler here! TV.

The show cobbles together short video vignettes originally produced for Here Media's gay-themed online properties, which include Advocate.com, Out.com, Gay.com and SheWired.com.

Among the celebrities appearing in the show are singer Adam Lambert and actress Drew Barrymore.

Lambert performed a two-song set from his debut album For Your Entertainment at the 21st Annual GLAAD Media Awards in Los Angeles. The28-year-old American Idol season 8 runner-up came out gay on the cover of Rolling Stone last June.

The show also talks to other Hollywood celebrities – some are gay and others are allies – about the importance of positively portraying the gay community in the media and GLAAD's mission to promote such depictions. Expect to hear from Benjamin Bratt, Alan Cumming, Cynthia Nixon, Cybill Shepherd, Wanda Sykes, Sofia Vergara and Sigourney Weaver, among others.