うぐいすかぐらでしょう
鶯神楽でしょう
uguisukaguradeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of うぐいすかぐら

1. Probably Uguis Kagura.

Polite
Presumptive
Conjecture
Usually Written in Kana