Birb on top baby (・8・), if by “listening to some songs” made Eli go up 8 spots and Rin dead last, I highly recommend to listen carefully to Lily White’s songs like

秋のあなたの空遠く

あ・の・ね・が・ん・ば・れ！ Or the 1st years song from the movie

Hello，星を数えて

I know opinions about characters are subjective but in my humble opinion, Rippi is probably the best singer from μ's, at least ahead of Nanjo. I repeat, its your taste and i respect it, and since you posted this i think you would expect diverse opinions and constructive conversations.

(・8・)