That seems a little Tina Cohen-Chang. Respect.
How to get it?
➜ Random star reward for playing the Friday event song "Raise Your Glass". It was obtainable from "Best Day Of My Life" when first introduced.
➜ Random star reward for playing the Friday event song "Raise Your Glass". It was obtainable from "Best Day Of My Life" when first introduced.

Leader
Tina
Tina
Performance Ability
Lv. 1
72
3083
XP to reach lv.
40
Lv.
40
316
Reach lv.70 to earn 30


Change all OK notes to Great, and Great notes to perfect for 7 seconds
Chance
50
%
Trigger:
Every 50 OK (or better) notes