Aw, man! I missed the registration for Keba Si Rota's OP/ED Musical Countdown Event and I'm really regretting it!!
So I'm going to feature a list here inspired by the event. ^^
First off, an honorable mention!
Air TV [OP]
“Tori no Uta” – Lia
I fell in love with the song from the first time I heard it. I even tracked it down on iTunes after so many years to purchase it officially!