Ballroom meets Kelly Street with Robert Baxter, Angie Hart, Zoe Coombs Marr and Noah Szto to compete for musical trivia glory, while diagnosing musos and spanking Frank Sinatra. Paul Dempsey turns back time with his cover.

We ask if The Nutbush is Australia's national dance and Greg Larsen takes Substitute to a new level. Lucy Durack, Royston Noell and Sara Pascoe join Alan, Myf and Adam. Plus Ruva Ngwenya's closing number is simply the best!