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Australia-based Mike Jackson is touring with his son Tom (21), to play at festivals, events and private shows.
While Tom has played the ukulele for eight years, Mike Jackson has been a performing artist for 35 years, and said he had played to more than 3 million children and adults.
He had also published several song books, and ukulele tuition books for children and adults.
The pair visited the Queenstown school to hold a ukulele workshop and concert.
"The ukulele is not a toy.
"It is a proper music instrument, and should be treated and respected as such," Mr Jackson said.
During the concert, 22 pupils were introduced to the ukulele and after learning a few chords, they were able to play for their peers, with the rest of the pupils in the packed school assembly hall singing along.
After the pupils' impressive first ukulele concert, the teachers had a go, and many took a liking to the instruments Mr Jackson had brought with him.
"It is my second visit to this school, and they always make me feel at home.
"I look forward to coming back again," he said.
After playing in Queenstown, the father and son team continued on to Christchurch before their return to Australia.