I’ve been looking at parts of the Archives Collection that have few resources. 
When I counted up 5 Music CD’s I decided that there must be more examples in parishes. In addition to the 3 that are shown on the attached photo, I also have a 2001 Michaelmas CD of the Choir of St Michael and All Angels and Dawn Chorus written, produced and performed by young people from the Diocese of Wellington and Christchurch.
We have a reasonable collection of printed music and hymn books that have been gathered from various sources. However I am aware that some parishes have had music specifically written for their congregations. It would enhance the collections to have copies of this music too.
Time to look in the cupboards and see what you can find.