Lady Gaga wowed with an 11-minute medley of songs from inside a perspex box in her exclusive performance for A Current Affair.
Fans described the acoustic rendition of Gaga's hit Edge of Glory as "moving" and said the star was a perfectionist on-set.
"Her voice was just amazing, for such a small girl she produces this incredible sound," one audience member said.
Gaga performed a compilation from her Born This Way album, following her interview with A Current Affair host Tracy Grimshaw.
She wore an embellished gold costume and a blue bob hairstyle under a perspex headdress.
Lady Gaga's visit to Australia will also include her Your All-Time Exclusive GAGA LIVE performance at Sydney 'Monster' Hall to promote her latest release, Born This Way.
For Gaga's fans nationally, this exclusive event will premiere on July 29 from 6pm AEST on Nine's digital channel GO!, on radio across Austereo's Today Network and Southern Cross Media networks and online at take40.com, followed by Channel [V] at 9pm AEST.
Vodafone and 3 customers will also be able to view the show and content from GAGA LIVE at Sydney Monster Hall directly from their mobiles via Vodafone Central for Vodafone customers and Planet 3 for 3 customers.
