Late in 1988, Willoughby was asked to join the newly formed Yothu Yindi as drummer on their tour for the album "Diesel & Dust". The tour visited 73 cities in the United States. Willoughby left Yothu Yindi in 1989 after the tour, and formed a new band Mixed Relations. This is the band he currently plays with. They have toured many Aboriginal communities and Australian cities, as well as several countries in the Pacific Islands.