- Main article: Morning Musume
All Morning Musume's Era over years.
The Golden Era (1999-2001)
There’s been an endless controversy over a definition of "The Golden Era". Some insist it began with the huge hit of LOVE Machine, while others say it started as the 4th Generation joined in, yet many fans would agree it ended with the addition of 5th Generation. "The Golden Era", as the most successful period of Morning Musume, would be only two years between LOVE Machine and The☆Peace!.
The Platinum Era (2007-2010)
The period started after the secession of Fujimoto Miki and lasted until the graduations of Kamei Eri, Junjun and Linlin (2007-2010). It is approximately equal to the period Takahashi Ai was the leader (2007-2011). In the "Platinum Era" Morning Musume was at the height of their performance skills with a stable line-up in spite of being less popular than in the previous eras.
- Onna ni Sachi Are
- Resonant Blue
- Pepper Keibu
- Naichau Kamo
- Shouganai Yume Oibito
- Nanchatte Ren'ai
- Kimagure Princess
- Onna ga Medatte Naze Ikenai
- Seishun Collection
- Onna to Otoko no Lullaby Game
The Colorful Era (2012-Present)
The current lineup, since One•Two•Three / The Matenrou Show, is called "The Colorful Era". This Era was first led by Michishige Sayumi. Following Michishige's graduation, Fukumura Mizuki now leads the current era.
- One•Two•Three / The Matenrou Show
- Wakuteka Take a chance
- Help me!!
- Brainstorming / Kimi Sae Ireba Nani mo Iranai
- Wagamama Ki no Mama Ai no Joke / Ai no Gundan
- Morning Musume '14
- Egao no Kimi wa Taiyou sa / Kimi no Kawari wa Iyashinai / What is LOVE?
- Toki wo Koe Sora wo Koe / Password is 0
- TIKI BUN / Shabadaba Doo~ / Mikaeri Bijin
- Morning Musume '15
- Seishun Kozou ga Naiteiru / Yuugure wa Ameagari / Ima Koko Kara
- Oh My Wish! / Sukkato My Heart / Imasugu Tobikomu Yuuki