Need some quick translating

[snocket]

I'm obsessed with the first song that plays in this video:

[Mint]+decaf tour' - YouTube

I would be forever grateful if someone could figure out what is the artist name and, if possible, what that first instrumental is called.

Any help at all would be appreciated!

[SumireSatoh]

This band is called [Mint].

The first instrumental is ’情熱大陸'(Jounetsu-tairiku/Jonetsu-tairiku) by 葉加瀬太郎(Taro Hakase), I think.