Audio from Meshel, Tim and Marty's drive show on Nova FM on 19 October 2011.
For weeks, Meshel, Tim and Marty had been appreciating the work of Pentatonix, an American acapella group who perform on TV show 'The Sing Off'.
Their particular favourite was the part where the group like to spontaneously burst into song - in particular where they order a 'large caramel macchiato'.
Today, they got to speak to Avi from the group, who told them acapella was his life and he had seen Aussie acapella group The Idea Of North perform when he was in Australia.
And of course Meshel, Tim and Marty couldn't let him go without getting him to sing their coffee orders over the phone!
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