Guy plays for Take 40
He played all his big hits for the 450 people in the lounge. During a Q&A Guy revealed that if he wasn't a singer he would have been a radiographer.
Clips from the night can be seen at Take40.com with the whole performance playing on Channel Eleven at 11am on December 8.
Take 40 reaches nearly a million listeners a week nationally, whilst the website is the number one audited music site in Australia with 575,000 UB's on average to the site each month.
Watch a couple of songs from the night below: