I received a note from a friend about the Pueri Cantores convention in Ireland at Maynooth Seminary.
There are some fine video available for your perusal on Gloria.TV.
The chant is not perfect, but they will nevertheless convince you that we need more boys choirs! There is nothing quite like the effect of a boys choir. When the boys get back onto more familiar territory, such as the proper, the sound is exceptional.
One of the things I noticed right away was the striking use of repercussion in the Gregorian chant. This is evident in the first video which begins with a less than optimal singing of the Introit, particularly when they get to the Gloria Patri.
Singers are divided about repercussion. I tend to favor it but only when it is done with greeeeaaaat delicacy. The notes mustn’t be hammered.