I believe Ansett's VH-ABR was out and about on Sunday. If that is what you saw, the sound was Wright Cyclones, not Pratt's.
Doesn't really matter they both sing their respective songs so very sweetly.
Sunny, Alan normally flew TAA's AES before it when north to HARS. That said young Alan could fly any DC3 in his sleep, he's been flying them for over 50 years.
CC