efushii
FC

n : A fanclub. Usually only major bands and bands with a large fanbase will have a fanclub

emushii
MC

n : The talks inbetween songs during a concert. These are actually written into the setlist, and are used not only to tell stories but also to give information about new merchandise, releases, or other concerts

ensei
‰“ª

v : Going out of your way to go to a concert, sometimes even across country

esuii
SE

n : The music that plays in the beginning of a concert or set during which a band comes out on stage. Usually an SE is played only at a concert, but sometimes the SE is put onto CD and sold with other songs