The New Zealand Choral Federation (NZCF) was asked by tournament organisers Rugby NZ 2011 to put together 48 choirs, each made up of about 30 members, to sing national anthems before matches.
When about 1000 people auditioned nationwide they were given no guarantees in regards to tickets, but later NZCF told those selected they would receive a match ticket.
However, choirs for the New Zealand-France pool match, semifinals and final were informed last week they would not receive tickets.
Rugby NZ 2011 spokesman Shane Harmon said when an allocation of choir tickets was "formalised" tickets could not be made available for the matches with heaviest demand.
With the number of choir members rising to 45 for the semifinals and finals, those tickets are worth about $48,000.
Mr Harmon said tickets were provided for 44 of the cup's 48 matches, including matches such as New Zealand versus Tonga, New Zealand versus Japan and Australia versus Ireland.
"Only about a dozen singers of the 500 singers we have recruited won't be singing at any other match except [the four where tickets were not provided].
"We appreciate their contribution and will be offering them tickets to one of the remaining Auckland matches."
NZCF artistic director John Rosser would not comment on the allocation of tickets because of an ongoing relationship with RWC organisers.
He said choirs performing in the finals contained the strongest singers and while the location of most performers was taken into account, some would travel to attend matches.
"It's a long process to have to download and learn the anthems and the pronunciation and all of that sort of thing by themselves.
"But I've just had so many 'best experience of my life' comments from choir members ... They've had a fantastic experience."