What is believed to be the world's longest piano attracted curious onlookers who were amazed not only by the piano but also the talent of its builder and player.
Mr Mann, of Timaru, said he was not a concert pianist, just someone who enjoyed playing the piano.
The piano, which only has 85 of the standard 88 keys because he did not make the piano wide enough, sounded better in the museum than at his home, he said.
The far, right-hand keys were not missed.