2017 saw Scalzo touring Australia in Original Australian Cast of Green Day's American Idiot musical directed by Craig Illot.

The Auckland and Manila seasons featured stars Suzie Mathers, Jemma Rix, Maggie Kirkpatrick and Jay Laga'aia as The Wonderful Wizard of Oz.

The Australian tour featured stars Lucy Durack, Jemma Rix, Maggie Kirkpatrick and Reg Livermore as The Wonderful Wizard of Oz.

Scalzo was also in the World premiere and Australian tour of the Des McAnuff-directed stage adaptation of Boris Pasternak's novel Doctor Zhivago, with a score by Lucy Simon.

In 2015, Scalzo was cast and set to appear in the Opera Australia/Gordon Frost Organization co-production of Jekyll & Hyde – The Musical starring Teddy Tahu Rhodes, Lucy Maunder and Jemma Rix.

He was the inspiration for a show based on a young boy triumphing over adversity and finding his voice through the power of his imagination in a play workshopped and staged at Monkey Baa Theatre[5] in 2013 directed by Australian comedic actor Darren Gilshenan.