Hearing that
probable Aussie on 531 with the stock T-615 is really cool!
I checked the
Grayland Master logs (skillfully compiled and maintained by Chuck Hutton) as
well as my own logs for 531. The Australian most often heard on 531 has been 2PM
Kempsey in New South Wales, but there was one log by Walt Salmaniw of 4KZ
Innisfail.
I had a log of 2PM
in 2oo5, with a slogan of "Easy Listening 531".
If the music you
noted was "island" music or Maori style, it would almost certainly have been
1XPI Auckland, NZ.