Listen to the sound clip 15. 1:23 from Happy Lesson ハッピーレッスン - Video Game Music: 15. 1:23 15. 1:23 This sound is from Happy Lesson ハッピーレッスン - Video Game Music Video game music from Happy Lesson ハッピーレッスン for Dreamcast. Published by DATAM POLYSTAR CO. (2001). Go to the full soundboardwith more sound clips Search