Tom Ellis Is Singin' in the Rain in BTS Video from Musical Episode of Lucifer

"We had so much fun shooting episode 4 of #Luciferseason5," Ellis wrote. "In between takes I found an umbrella and made this video with the ever imaginative @joshstyle sometimes I love my job. Other times I cant believe its a job."

The episode is expected to be an homage to Old Hollywood; it will be filmed entirely in black-and-white, and will drop the characters into an alternate version of the 1940s. "Were touching on a period where the language is different," Lesley-Ann Brandt told Entertainment Weekly. "What were wearing is different, the points of view are different and within that, its challenging because the audience knows the characters from season one."

Ellis also told Entertainment Weekly that this episode will provide some more backstory on Lucifer's character: "We tell a story that answers the question a lot of fans have been asking actually... The lovely thing about this episode is you see a lot of our regular characters in a different light. Theres an element to Lucifer where he seems to be from the Oscar Wilde period. And to see the other characters fall back into that style is quite interesting."