All songs of Hello, Happy World!
- Arawaru! Daikaitou Hello Happy! [The Great Hello Happy Phantom Thief Appears!]
- Bokura no Natsu's☆Showtime!!
- Egao Mi~kketa! [I Found a Smile〜!]
- Egao no Orchestra
- Egao Sing A Song
- Egao, Are You Ready???
- Five Smiles◯All In!
- Goka! Gokai!? Phantom Thief!
- Happy! Happier! Happiest!
- High Five ∞ Adventure
- Kimi ga Inakucha!
- Kimi wo Let’s Have Fun ♪ [You, Let’s Have Fun ♪]
- Life Is Musical♪♪♪
- Nice To Meet You!
- niconiconnect! [Smile Connection!]
- Niko x Niko = Hyper Smile Power! [Smile x Smile = Hyper Smile Power!]
- Omoide Illumination
- Omoiyari Harmony
- RASHAPEOPLE!
- Sambaro Happy! [Let's Samba de Happy!]
- Smile Bouquet de Ta~maya~! [Cheering for the Smile Bouquet!]
- Uchapa! de Pappika Pon!
- We Can☆Furefure! [We Can☆Hurray!]
- YAPPY！SCHOOL CARNIVAL☆彡