From Bulbapedia, the community-driven Pokémon encyclopedia.
Bonus (Japanese: おまけ Omake) is a song performed by Inuko Inuyama. The CD it is on, Nyarth's Party, did not list it at a track on the CD cover and it is a hidden track. The track is also extremely short, only lasting 41 seconds.
| もう一曲 いっちゃおうかニャ…
柔らかい布で やさしくやさしく 拭いてあげるニャ
ま～るい ま～るい おいらのＣＤ
| Can I do one last song...?|
If this CD gets covered in fingerprints and dirt
Then wipe it tenderly, tenderly, with a soft cloth
Places that are hot and places that are damp
Aren't good places to bring this CD
This is my CD, please treat it carefully
This is my CD, make it last a long time
My round, round CD