And then, with an appreciable improvement in the vocal sound, everything turned with his dark, spare and Costello-like ballad I Thought You Should Know, which he back-ended with a quip before kicking into a bracket of New Orleans and Cajun-influenced songs, then the moving After the Mardi Gras, and a shift to electric piano for Pocketful of Rain (which he announced with a comment on his drinking years).
By the midpoint of the two hour-plus show, Earle had become the dry, engaging and committed performer his loyal audience expected.
From then on, if there was no consistent upward trajectory towards the two encores, his powerful songs carried the night: the country storytelling of Ben McCulloch; an outstanding duet with Whitmore on the bluegrass I'm Still in Love With You; the moody Invisible (about the homeless, again prefaced by a pertinent personal anecdote); the crowd-pleasing Guitar Town and Copperhead Road from his back pages.
During Billy Austin, his heart-stopping story of a man on Death Row, you might have heard a pin drop - beyond the inane and inappropriate whoops, inarticulate drunken shout-outs and audience chatter from the bar.
Towards the end he complimented New Zealanders on their liberal political and environmental stands then fired off The Revolution Starts Now. It was ragged but terrific.
You just wish it had started earlier.