I have no idea. but a usual concert consists of around 15-25 songs right? so she has 12 albums and if she were to sing 2 single songs from each of them we'd have a concert of 24 songs. I think that'd be fine.
something like
Depend on you
poker face
WHATEVER
kanariya
SEASONS
SURREAL
Endless sorrow
Daybreak
Free & Easy
Voyage
ourselves
forgiveness
Moments
GAME
STEP you
alterna
Startin'
BLUE BIRD
fated
talkin' 2 myself
GREEN
Sparkle
Sunrise ~LOVE is ALL~
BALLAD
MOON
blossom
crossroad