I'm going to play for a wedding and need some music. I've played this before but the music was always given to me by the organist. This time the organist is saying I should have it and I probably should. I want to make sure I'm getting the right thing and over the Internet I can't see it first. Here is what they sent me. Anybody know where to get it and know it's correct? "The organist, told me to tell you it is the Mass of Creation Joyce said you should have the trumpet music for the parts of the mass: Holy, Holy Holy, Christ Has Died, Lamb of God, Celtic Alleluia, etc."