This concert turned out to be a double birthday bash for both the King's Singers and Voices New Zealand Chamber Choir.
While the New Zealanders have notched up 20 years of choral professionalism, their British guests can look back on half a century of setting benchmarks for a cappella singing, in everything from Byrd and Brahms to Bacharach and The Beatles.
It was an unmitigated pleasure to experience the vocal sheen and expertise when the two groups joined forces for the rich canvases of Eric Whitacre's The Stolen Child and Bob Chilcott's High Flight, conducted by Karen Grylls.
The Watershed Time, a special commission from Auckland's Leonie Holmes, used Anne Powell's words to contemplate the timeless connection between this country's land and seascapes.
Unafraid of familiar major and minor, Holmes combined her two forces with admirable sureness. Beautifully molded and sometimes angular solos from the King's Singers made their impact, as did the choir, creating an atmospheric backdrop from significant phrases and, occasionally, just sound alone.