In late 1978 Don was touring to promote the release of Shiny Beast (Bat Chain Puller). At the end of October or beginning of November he called in at the studios of KROQ Pasadena for an interview with Darryl Wayne and to answer questions from fans over the phone.
Wife Jan is also in attendance and can be heard speaking to Don briefly.
(Note: the information given on YouTube is mostly incorrect. The correct date and album details are given above and can be confirmed by Don’s mention of Richard Redus as being in the touring band.)
Take a listen: