Mikoto's, Es' songs are complete.
Haruka's too ... [ somewhat, waiting for Mariri ]
Mahiru, Muu has only one spot left.
Fuuta is complete, I think ?
No-one's taken Kazui so far.
Shidou has one left, I think.
Kotoko's is almost or is complete.
Amane's, Yuno's has a few spots left.