of no fewer than 20 members

of no fewer than 20 members

with no fewer than 20 members

of no fewer than 20 members

of no fewer than 20 members

Prize for the best performance by a choir in the choral section, of a Welsh language piece by a Welsh composer.

between 3 and 6 in number

The Blue Riband Prize for those 25 years of age and older

over 19 years old

The Blue Riband Prize for those 19 and under 25 years old