With the different music we heard, it seems Ichinose will have a greater role in the soundtrack of Sword and Shield than in the one for Sun and Moon, and that's really cool ! Oh and it seems that night versions of some music are back (most likely at least for the towns and cities, and maybe for the routes themes) :
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https://youtu.be/ho-hxhCInUQ?t=58 seems to be the night version of
https://youtu.be/T7UT8eeMigg?t=277
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https://youtu.be/-K1YzDD31MU?t=53 seems to be the night version of
https://youtu.be/uGR9dc0Ny1E?t=278
I was really disappointed that he did not do a lot of music in Sun and Moon (even if some of his music in the games were wonderful, like Lonely Lillie, Konikoni City (Day), Battle! (Island Kahuna) or Gladion's Theme for example).
And I'm not even talking about the X and Y soundtrack... Not having Ichinose on board (and with Sato having a very very small role) made the soundtrack so boring to me... It really lacked the kind of crazyness that Ichinose brings to his music.
Oh and did I say that I love what seems to be
Bede's battle theme ?