Bossa Nova/Unused

Rhythm Heaven Fever
Bossa Nova consists of the following versions in Rhythm Heaven Fever:

Unused
There is unused sprites of 2 arrows forming a circle, likely to illustrate the switching mechanic and of green arrow.

Regional diferences
The Japanese version positions the text on the right side of the screen and is read vertically, while it is at the top and horizontal in the international releases.

Rhythm Heaven Megamix
Bossa Nova consists of the following versions in Rhythm Heaven Megamix:

Regional differences
In the 🇺🇸 version of Rhythm Heaven Megamix, playing this game with Japanese voices has it play the English voices instead. This error was not present in Beat the Beat: Rhythm Paradise, and is corrected in Rhythm Paradise Megamix and Rhythm Sesang: The Best+.