When Maggie (Dakota Johnson) suggests bringing in a backup singer to add some layers to David's (Kelvin Harrison Jr.) new song, he pushes her to step up to the mic and try it herself.

Amy Schumer ('Life & Beth') , Bridget Everett ('Somebody Somewhere), Molly Shannon ('I Love That for You'), Quinta Brunson ('Abbot Elementary'), Selena Gomez ('Only Murders In the Building'), and Tracee Ellis Ross ('Blackish') joined The Hollywood Rep...