Everybody - Maji Desu ka Ska!
Mano Erina - Banzai! ~Jinsei wa Meccha Wonderful~
Morning Musume - One Two Three and Watashi ga Ite Kimi ga Iru
Everybody - Watashi ga Obasan ni Nattemo (Moritaka Chisato cover) and Peaberry - Cabbage Hakusho
Michishige Sayumi and Tanaka Reina - Watashi no Jidai!
Sources: 1 and 2
If any more performances are uploaded, I'll add them.