Thanks for your help with the warping and try to help with the Holy Music mess.
If I direct translate Holy Music as it is written under Abilities into Meditation I think it should look like this
Presence + Music (Singing) vs an ease factor based on the circumstances every 10 Minutes for 1h and then Presence as characteristics for the Miraculous Effects roll.
You lose 1 Fatigue level each time you fail a Music roll and a botch end the ritual. Also a Concentration roll to keep your focus is necessary if you get distracted.
Because the description under Abilities is more exact I think Presence mentioned there is the characteristics for the Miraculous Effects roll instead of the Perception mentioned under Virtues.
I also suspect if there wasn't a failed Music roll the Miraculous Effects roll is single die and if there was a failed roll before its a stress die.