[3] She appeared in the Australian stage productions of Disney's Beauty and the Beast (1995–1996) as Belle opposite Hugh Jackman, (the cast recording of which won an ARIA Music Award for best cast album of 1996)[15] Les Misérables as Fantine (1997–98), The Sound of Music (August 2000 to February 2001), taking over from Lisa McCune as Maria for the Perth and Adelaide productions),[16][17] Cabaret as Sally Bowles, Singing in the Rain as Kathy Selden.

[3][8] In 2006, Beck (as Gladys Hotchkiss) appeared alongside her husband Ian Stenlake (as Sid Sorokin) in a stage production of The Pajama Game at Melbourne's State Theatre.

[18] In September 2007 Beck undertook the role of Beth in the Australia and New Zealand live concert tour of Jeff Wayne's Musical Version of The War of The Worlds – Alive on Stage.

[19] She was cast opposite Michael Falzon (Artilleryman) and Shannon Noll (Parson) as well as album alumni Chris Thompson, and Justin Hayward in their original roles.

[20] The cast performed with the holographic head of narrator Richard Burton, as well as musical talents of the 48-piece ULLAdubULLA Strings and 10-piece Black Smoke Band, conducted by composer Jeff Wayne.

[21] During January and February 2012, Beck appeared in the role of Claire in Squabbalogic's premiere of Adam Gwon's chamber musical Ordinary Days at Sydney's Darlinghurst Theatre with Michael Falzon (Jason), Erica Lovell (Deb) and Jay James Moody (Warren).

[1] Beck appeared with fellow Ordinary Days co-star Michael Falzon for A Swingin' Christmas Proms 2014[24] for Adelaide Festival Centre on 12 and 13 December 2014.