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Aelarion actually their budget is too small for their popularity, the covers and PVs are always lazy or low quality. Even sayuri and Aimer, who are newer artists get decent PVs and covers which are obviously having bigger budget thrown into their making (they got better websites too). The only thing i can think of is that they are investing the money on the many live performances instead (that ironically result into worsening the girls' voices) , which the afformenthioned 2 artists dont have to this extend.
As a person not living in Japan i would prefer only one tour per year and better covers/PVs instead.
Kalafina in 2016 did 3 tours:
1) far on the water's tour continuation from 2015 ( in Japan, Taiwan, Mexico, Shanghai), (all more than 15 lives for sure - too lazy to count)
2) "Kalafina with Strings" Spring Premium, (3 lives),
3) Arena lives (4 lives),
4)" Kalafina with Strings Christmas Premium LIVE 2016" for promotion of winter album. (12 lives)
+ numerous others small lives, like Tanimura's concert collab, anime events, single promo mini lives.
2016 had to be their busiest lives year, since they released nothing other than blaze and half of the christmas album, when it comes to new songs.