Sir Henry Brett was responsible for the original organ in the Auckland Town Hall.
Here is an excerpt from the minutes of an Auckland City Council meeting in 1907:

HENRY BRETT 14/3/07, offering to provide an Organ for the Town Hall on condition (1) that the requisite space for the organ as set out in the specifications shall be provided and (2) that a certain number of performances to be hereafter agreed upon, shall be given to the public free every year.
His Worship the MAYOR moved, Councillor PARR seconded:
“That this Council accepts with feeling. of exceedingly great pleasure and satisfaction Mr .Henry Brett’s magnificent gift of an Organ for the new Town Hall for the City of Auckland.
Mr. Brett has always shown a practical interest in any movement in relation to music in this City, and this last gift further proves his devotion to the City in which he has lived for so many years and his sincere desire to add to the enjoyment and education of its Citizens, and this Council feels that it cannot allow the occasion to pass without expressing its sincere and heartfelt thanks for such a generous gift.”
Carried with acclamation.