All I know is that Colin Hay writes some fantastic songs and the subtleties of his melodies are well worth investigating, even more so as he plays more acoustically and paying more homage to his Scottish roots. You only have to listen to 'Freedom Calling' to understand that he truly is passionate about words and melodies.
I've taken to interspersing a couple of his solo numbers in my otherwise fairly traditional sets and have only heard positive feedback as 'Down Under' was what I grew up with.
Check out 'What would Bob do?' on YouTube to hear how he's lampooning the generation that place all too much emphasis on Dylan and take his direction on everything. Very funny, excellent catchy song that you may all enjoy.
Dave