I assist at the TLM, and can't help noticing how certain men like to make it (loudly) known how well they know their Latin chant. Fine and good, but when they're tone deaf, what should be beautiful turns into penance for the neighbor in the pew. And it was liturgical dissonance I was trying to escape from! By all means, sing--but unless you're a professional opera singer (like my parish priest is), must you sing ten decibels more loudly than every one else?