It's Breakfast Club tradition that Gary's daughters Florence, Bridie and Evelyn come in just before Christmas and sing for us.
This year they've done a group performance with their Dad, taking on Gary's Christmas song 'For The Blessed'.
Last year Gary's song stormed up the charts to number 1 - now he's re-released song with Guy Sebastian and Mitch James!
All funds raised from the song will go towards More FM's Jingle Bail and Koru Care.