Not long after “Bloody Celestial Karaoke Jam” aired, the Radio Times ran a piece ranking all of the episode’s songs, which started with a confirmation that yes, Tom Ellis can indeed sing. The piece even included a 2011 video of Ellis singing Ed Sheeran’s “The A Team.”
This distinctive part of “Lucifer” evolved from a happy accident. Showrunners happened to see Ellis sing Wilson Pickett’s “Mustang Sally” one night after filming was through and the cast were relaxing at a karaoke bar in Vancouver. As it turned out, many other main cast members were also able to sing, including Lauren German, D.B. Woodside, and Kevin Alejandro, and the idea snowballed from there (via Express.co.uk).
Even with his strong singing voice, though, Ellis still occasionally let nerves get the better of him, particularly during “Bloody Celestial Karaoke Jam” when Debbie Gibson entered the picture. “I was really nervous the first couple of takes because Debbie’s such a pro and so used to doing all those things,” he told Variety. “There were a couple of times I messed up the lyrics, and I was pretty angry with myself, but she was just great.”