くろじっうぐいすかぐらであれば
黒実鶯神楽であれば
kuroji' uguisukaguradeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of くろみのうぐいすかぐら

1. If it were Kurojitsu-uguisu-kagura; Were it Kurojitsu-uguisu-kagura

Ba Conditional
Usually Written in Kana