is the fourth single from the J-pop idol group Morning Musume, released on February 10, 1999 as an 8 cm CD. It sold a total of 410,850 copies. In 2004 It was re-released as part of the Early Single Box and again in 2005 as a 12 cm CD. Lead vocals of this single were Natsumi Abe and Asuka Fukuda. Prior to this singles release, on January 17, 1999, Fukuda shocked viewers of the television show Asayan with her decision to "Graduate" from Morning Musume and continue with her studies.

"Never Forget", one of the coupling tracks on the single, is often traditionally sung by band members at their graduation concerts and/or final TV appearances with the group, prior to embarking on solo careers or new groups.

Track listing

All songs written by Tsunku.

8 cm CD

1. – 5:05
2. Happy Night – 5:13
3. Never Forget – 4:35
4. – 5:04

12 cm CD (Early Single Box and individual release)

1. – 5:05
2. Happy Night – 5:12
3. Never Forget – 4:37
4. – 5:05
5. – 5:31

Members at time of single

• Natsumi Abe
• Kaori Iida
• Yuko Nakazawa
• Asuka Fukuda (Last single)
• Aya Ishiguro
• Mari Yaguchi
• Kei Yasuda
• Sayaka Ichii

External links

• Memory Seishun no Hikari entry on the Up-Front Works official website
• ThePPN: Memory Seishun no Hikari