Usagi and Rei Relax at a Cultural Festival

The girls are sitting around a bonfire at the end of a cultural festival. Usagi sits on a bench with Rei and compliments her on her earlier singing performance. Totally non-matching background - I really like it, but it doesn't match the scene at all.
Key Cel
Sailor Moon R Episode #54
The cultural festival is just for me? Queen Rei sings out
Bunkasai ha watashino tame!? Rei joou nesshou