K.K. Bossa

"K.K. Bossa" is a K.K. Slider in all the games in the to date. It is a slow, light jazzy tune that is based on the Brazilian music genre bossa nova, or simply "bossa". Its album art features the "wave" sidewalk design of, and Frank, an eagle based on the Brazilian , appears as well. Blaire, Bree (both as of ), Chai, Cleo (only in ), Deirdre, Elise (both as of ), Goldie, Lulu, Mallary, Margie (before ), Marshall (as of ), Peggy, Robin (before ), Tia (as of ), Wendy (in and ) and Winnie (only in ) all have "K.K. Bossa" playing in their homes.

In
In, "K.K. Bossa" is performed by K.K. Slider at the Fireworks Festival. Requested by Margie, it quickly becomes her theme song, representing her friendship with the main character, Ai. It is sung in Animalese with a translation to Japanese running along the bottom of the screen.

Lyrics
"K.K. Bossa" is the only K.K. Slider song to have been given lyrics.