RIP: Mary Yandall

I lived next door to the Yandalls in Grey Lynn for several years - one of the sisters lived there I believe, as did the old man (I think he may have been a City Councillor at some point). I thought they were Nuiean, but the NZ Herald says Samoan:

NZ Herald: One of the sweet-singing divas of the popular 70s Kiwi group The Yandall Sisters has died.

Mary Yandall died on Monday at Auckland City Hospital after a short illness. She was 62.

Ms Yandall and younger sisters Pauline and Adele made up the singing group that became widely popular in 1970s New Zealand.

Their catchy song Sweet Inspiration was an instant hit and was on the NZ Top 20 singles chart for eight weeks in 1974.
[...]
Raised by Samoan parents in Auckland's Grey Lynn, Ms Yandall grew up singing in Sunday school and in the choir at the nearby Pacific Islanders Presbyterian Church in Newton.
[...]
Ms Yandall will be farewelled at the Pacific Islanders Presbyterian Church in Newton tomorrow at 10am.

It sounds dated (heavily influenced by the WWII big band era) and looks more than a bit cheesy now, but this is a good example of one of their popular medleys that made them famous. From the Tui Teka show, opening with the big man himself:
And their big hit: