So since I have to many I'll choose my top 10 (because there my favorite )
Older ones
#5 the rock city boy
I can't stop myself from saying *ya ya ya (ya ya ya) rock city boy(rock city boy) * most likely because it's the part in English
#4 Evidence
I love it when it's like *piano* do dodo dudodo
And then the same thing on the guitar when it turned rockish
#3 egao no mahou
I love the main vocals on this song
Mean really I could not pull off the first note
#2F.T.
I love it's like fun sound
#1snow fairy
Like gosh it was the first ever main theme song on fairy tail

Newer ones
#5 i wish
I love the part when it says every body jump up every body hands up
It's so energetic
#4 towa no kizuma
I love the first piano part I would love to play piano like that
#3 yakusoka no hi
I love the beat and rhythm in this song
#2 masayume chasing
Wish this song I wish I could understand Japanese cause I want to know how to sing this song
#1strike back
Omg I love this song I just want to shout strike back every time the singer says it and the video content goes great with it the first part with the clock reminds me of fnaf video (you know how the clock moving back and fourth and stuff oh nevermind)

So yeah next favorite ending