Hello, Happy World! - Smiling & Singing A Song (instrumental) Share: Download MP3 Hello, Happy World! more songsView all Listen to Smile! Hello, Happy World! 01:20 Shin Takara Jima (Cover) Hello, Happy World! 01:20 Life is Musical♪♪♪ Hello, Happy World! 01:20 Connect and Smile Hello, Happy World! 01:20 Our Summer's☆Showtime!! Hello, Happy World! 01:20 Let's Samba de Happy! Hello, Happy World! 01:20 Kyu-kurarin (Cover) Hello, Happy World! 01:20 You, Let’s Have Fun ♪ (instrumental) Hello, Happy World! 01:20 Smile, Are You Ready??? (instrumental) Hello, Happy World! 01:20 Thoughtful Harmony (instrumental) Hello, Happy World! 01:20 Similar ArtistsPastel*Palettes Afterglow Poppin'Party Morfonica Roselia Kasumi RAISE A SUILEN Aya Arisa Ichigaya (CAST: Ayasa Ito) Happy Around!