Oh so many things....so many things that we had so close to being correct.
I do hope KyoAni gets to make these chapters into anime...cause this chapter is setup so well for the anime's style.
We actually see everyone in the combined Light Music Club except for Mio this chapter. Mugi gets flashback time, and Yui and Ritsu get a cameo panel. (Nao gets two panels, one establishing she's in the club room...and one reminding us she's been their the entire time.....maybe she'll write lyrics based on this story).