my $artists = $schema->resultset('Artist') ;
# $artists->result_class
   ('DBIx::Class::ResultClass::HashRefInflator'); # will cause errors
my $artistAndTitles = $artists->next->cds() ;
$artistAndTitles->result_class
   ('DBIx::Class::ResultClass::HashRefInflator');
while (my $hashref = $artistAndTitles->next) {
  print Dumper($hashref) ;
}