Bartolo , still irked at LOCATION@1 for having facilitated the union of the Count and PERSON@1 -LRB- in The Barber of LOCATION@2 -RRB- , promises , in comical lawyer-speak , to help PERSON@2 -LRB- aria : La vendetta -- `` Vengeance '' -RRB- .

Bartolo , still annoyed with LOCATION@1 for having made it easy for the Count and PERSON@1 to marry -LRB- this had happened in Beaumarchais ' play The Barber of LOCATION@2 -RRB- , promises to help PERSON@2 .
