Co-founder Sandra Buchanan said the choir had also just celebrated its four-year anniversary together.
From Everybody Hurts by R.E.M. to Royals by Lorde, about 45 singers had an "awful lot of fun" singing and dancing in the museum’s atrium, she said.
It was the group’s first performance under its new director, Ben Stegmann, who took on the role in March, just before the Covid-19 pandemic hit New Zealand.
The choir was happy to be back to rehearsing every Thursday night St Peter’s Anglican Church Hall in Hillside Rd and having "enormous amounts of fun".