Career
He appeared on their early recordings, which, together with the band"s four singles for Festival, have been picked up for a compilation album by the Half a Cow record company. In 1990, Gilbert released a "Natural Symphony" Civil Defense titled Kakadu Billiabong which is an unedited, high quality recording of dawn at a billabong on Nourlangie Creek in Kakadu National Park in Northern Territory. There is no music overdub and the birds and other animals can be heard going about their morning routine.