Rock on Tom!

Tom Cruise practiced rockin out on the balcony of his hotel room in Miami, Florida over the weekend. In an interview with Ryan Seacrest, Tom said he’s “having a blast” getting his musical feet wet.

The 48-year-old star, who plays aging rocker Stacee Jaxx in “Rock of Ages,” will sing Def Leppard’s, “Pour Some Sugar On Me,” as well as Bon Jovi’s famed power ballad, “Dead or Alive,” in the film, and Tom said he’s “learning a lot” about vocal performance.

“I’ve always loved music, but… there’s nothing like doing something yourself to give you a greater appreciation for what this art form is and it’s fantastic,” Tom told Ryan.

Julianne Hough, who plays Sherrie Christian in the musical, also had nothing but good things to say about working with Tom when Access recently caught up with the dancer/singer/actress.

“’Commitment’ does not sum up the whole Tom Cruise-ness. He is so unbelievable,” Julianne told Access as she teamed up with Cesar Canine Cuisine and the American Humane Association to kick off the voting campaign for the first Hero Dog Awards in New York City late last month. “It’s amazing.”

Julianne said Tom carries off his role as the successful, but aging rocker, Stacee, with aplomb.

“There’s no ounce of like, T.C. in that,” Julianne said, referring to Tom’s initials. “It’s all Stacee Jaxx, the character. He’s unbelievable.”

“Rock of Ages,” which also co-stars Catherine Zeta-Jones, Russell Brand and Alec Baldwin, is slated to hit theaters on June 1, 2012.

I love that Tom’s just practicing on the balcony. Wonder if he was actually singing – or just acting like he was singing. I think Katie’s face says it all.