The way the pecking order works in the Catholic Church is this:

• The local bishop controls anything that Rome chooses not to control
  
• The local pastor controls anything that the local bishop chooses not to control
  
• The lay people get what's left, and the pope, bishop, and pastor have the right to veto just about anything not specifically directed from the levels above.

The neoconservatives are rarely willing to accept anything unless it comes from Rome, and even then they often question any pronouncement made after 1950. We have neocons trying to contradict the pastor's choice of altar wine, the lyrics of songs we sing from Catholic hymnals (specific target now are phrases [tropes] added to the "Lamb of God" song), and the pastor's decision that we should stand and sing together during communion (rather than kneeling). Another interesting aspect of the neoconservatives is their distrust of priests and nuns and American bishops who don't come from specifically neoconservative roots. they liked John Paul II, but aren't sure about any other pope since Pius X (1903-1914).
As for "Danny Boy," I guess I'm six on one side, half a dozen on the other. I don't want it sung at MY funeral, but I don't mind it - but I wouldn't argue with a pastor or bishop who didn't want to have it sung, because there's no theological or liturgical justification for including it in a Mass other that the fact that some people like it. I think I'd draw the line at Neil Diamond songs, though. I don't care if "Holly Holy" and "I am...I said" sound religious to some folks. Next thing you know, they'll want "Cracklin' Rosie."
-Joe-