Prepare to see your favorite fictional surgeons burst into song on tomorrow night’s episode of ABC’s “Grey’s Anatomy.” In the spirit of “Scrubs” circa 2007, the cast will sing throughout the entire show, and actress Sara Ramirez tells E! News that viewers are in for quite a treat. Instead of chanting original songs, the cast will do covers of tunes that have already appeared on the show, such as “Chasing Cars” by Snow Patrol, and “Breathe” by Anna Nalick.

Ramirez’s character, Callie is the center of the musical extravaganza after suffering a traumatic brain injury, and subsequently falling into a coma, in last week’s episode.

“Callie’s state is such that we’re seeing people behave in ways that we normally wouldn’t see — like the fact that they break into song … So storylines are still developing throughout the episode with different characters, but what we’re seeing is because of all the trauma, we’re seeing a lot of this through her state, and it’s being interpreted through her brain and her state,” the actress told E! News.

It’s fitting that Ramirez’s character would be the star of the musical episode since the actress won a Tony Award and wowed audiences with her singing chops long before scrubbing in at Seattle Grace Hospital. Ramirez said she was pleasantly surprised to see her fellow cast members, most of which had significantly less musical experience, really get into the unconventional episode.

“Singing can be very confronting and can be overwhelming, a little intimidating if you’re never done it before … [but everybody] showed up, and I was so proud of everybody — not like in a condescending way — but just like [I was] really inspired by everybody’s gusto and fearlessness. Or if they had issues they worked through them and they showed up anyway!” said Ramirez.

Watch Thursday at 9 pm to see Sara and the rest of the cast belt it out in the operating room, and decide for yourself whether or not the doctors should just stick to their day jobs.