Fans who chortled their way through Abba-solutely Fabulous will love their new combo as they lampoon their favourite duos in entertainment - The Blues Brothers, Sonny and Cher, Kenny Rogers and Dolly Parton, Patsy and Eddie and more.

"We don't try to be anythings we're not ... we get changed in front of the audience ... there's a trestle table with 15 wigs and jackets on stage ... it's ridiculously funny, especially when we get to the facial hair," says the statuesque Burchmore, who also produces the show.

The facial hair is applied when Burchmore does Kenny Rogers and Mulcahy does Sonny, and when they perform The Greatest Show as Hugh Jackman and the Bearded Lady.

"I don't know, I'm just trying to learn Islands in the Stream," she says when I ask how she had time to put the show together with her busy schedule. Apart from touring Burchmore has appeared on episodes of Grant Denyer's Celebrity Name Game and recently filmed series one of a new situation comedy alongside Michala Banas.

"It's called Famtime ... it's something I've never done before." She plays a recently widowed cougar who is a whiz on dating Apps. "Every family member is obsessed with social media and there is no communication. It's a lot of fun and will be on screen later in the year."

Apart from Islands in the Stream there are 21 other songs in the new stage show. "Every song is a hit, but it's not your normal duet show, it's a lot more ambitious. We've got 15 costume changes. I'm loving myself sick as Cher and Lara as Sonny."

Some of those hits are Proud Mary, Ain't no Mountain High Enough, Turn Back Time, I've Got You Babe. Shrek and Fiona, and Jasmine and Aladdin even get a look in. The pair even do their own version of rehab for Patsy and Eddie.

Burchmore and Mulcahy are fast friends since working together on the musical Mama Mia. They wrote the show together and Burchmore has flown to Sydney every other week from her home in Melbourne, to work on the script and choreography.

"We made up the anecdotes and choreography, there's even a tap dance. Some of the pairings are more obvious than others. It's an incredibly stupid take on partners. We have to be fairly regulated to link in with costume changes but things will go wrong and that's alright, too."

Jack Earl has written the charts and the ladies have recorded the backing tracks, but there is a live band. "As I'm getting older the band is getting younger," Burchmore quips. "Hopefully the audience laugh out. This is another level of madness."