WATCH: What does Nick Jonas sing in the shower?

Nick Jonas sheds his tuxedo to get intimate with actress Shay Mitchell in his new music video for Under You.

The pop star and Pretty Little Liar share a steamy shower scene, and they reunited Tuesday at the SiriusXM studio, where Jonas hung out with the Morning Mash Up crew for this week’s Bacon, Eggs & Mash Up fan event.

But in real life, Jonas said he washes up while belting out the Les Mis soundtrack. (As all true JoBro fans know, he played Gavroche on Broadway and Marius years later on London’s West End.)

To warm up his voice before a concert, “I sing all day long, so I basically get in the shower in the morning and do a one-man show version of Les Mis,” he told SiriusXM Hits 1’s Mikey Piff. “And then I just sing the rest of the day and get ready for whatever I have to do.”

Watch Jonas, 23, answer questions about performing with pal Demi Lovato, reaching No. 1 on the charts, being given the Hal David Starlight Award at the Songwriter’s Hall of Fame induction celebration and more in the videos below, and check out photos and videos of Jonas on Snapchat (username: siriusxmhits1).

Jonas’ album Last Year Was Complicated dropped Friday, and his Future Now Tour with Lovato kicks off June 29.

Listen to the Morning Mash Up weekdays from 6 am to 12 pm on SiriusXM Hits 1 (Ch. 2).