One good way to get attention for your clever mash-up video project? Have your famous friends star in it!

For his 'Chicago' musical-meets-Disney villains clip 'Spell Block Tango,' 'American Idol' finalist Todrick Hall got pals, including Adam Lambert and Amber Riley, to dress up and play along.

Adam introduces the video --  inspired by 'Chicago' centerpiece 'Cell Block Tango' -- as Captain Hook, and 'Glee' star Amber makes a perfect Ursula from 'The Little Mermaid.'

"I have always had a strange fascination with the Disney villains' side of the classic fairy tales," Todrick says, "and now through the music of 'Chicago' you'll get to hear their stories."