After 17 years performing, Enso String Quartet still has the freshness and attack that spurred one critic to rationalise the group's smouldering power as half honey and half molten lava.
The musicians opened their Auckland concert with Haydn, as they did here four years ago, this time choosing the final quartet of the composer's Opus 20.
The emphasis was on the earthy; a rustic first movement gained thrust and directness by forgoing repeats, while individual touches elsewhere included the Adagio's lingering outbursts, in which time itself seemed to stop and listen.
The Ensos have recorded the complete string quartets of Argentina's Alberto Ginastera and the second was on offer tonight.
Leader Maureen Nelson warned us to listen for finger-nail pizzicato and spoke affectionately of their "south-of-the-border Bartok".