VIDEO: Katherine McPhee Performs New SMASH Song 'Public Relations'

It's been a while, but BOMBSHELL is back!

TVLine has just revealed a sneak peek at the upcoming show-stopping number 'Public Relations' from next week's episode of SMASH, 'The Read-Through.' Check out the performance, featuring Katherine McPhee and Christian Borle, below!

In the episode, Julia's (Debra Messing) fears increase when Tom (Christian Borle) airs his suspicions of Peter (guest star Daniel Sunjata). Jimmy (Jeremy Jordan) and Kyle (Andy Mientus) confront their own crisis of confidence as "Hit List" is read for the first time. Meanwhile, Ivy (Megan Hilty) realizes her triumph might not be all she hoped when she meets her new co-star, Terry Falls (guest star Sean Hayes), and Karen (Katharine McPhee) wonders if she can trust Jimmy. Anjelica Huston, Jack Davenport and Krysta Rodriguez also star. Sean Hayes, Daniel Sunjata and Nikki Blonsky guest star.

"The Read-Through" airs March 5 at 10 p.m. on NBC.