There are some very iffy synonyms being used in the changes here, so I'm not confidant about some of them but here goes -
The answer is a Scotticism so 'Rabbis' might be 'Rabbie' to signify that.
They are solo musical 'pieces' for 'many' which I think justifies the pluralisation.
It's a wedding night 'debut'.
As you need the wrong letters from the misprints to get the phrase, these 'answers' of mine will work out ok.