Searching for a japanese song

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Good day, anons.
Today I was listening to japanese radio stations searching for a nice music from there (they sometimes create some quite unique stuff).

Well, I got completely into a certain song that was pretty sweet to hear, but I have no idea what would be the name.

I took a pen and a piece of paper and tried to write down part of the lyrics at the last moment, to search for it later.

Well, the thing is, I only got this info for you all to maybe help me finding it:

1- Part of refrain/chorus was "kawaru mawaru sekai wa mirai ja ni naru...", roughly "変わる回る世界は未来じゃになる...", I assume (unless I'm using the wrong kanji for "kawaru")
2- The rhythm is pretty similar to bossa nova, jazz and blues (can't really decide which, but my friend listening to a certain part of it mentioned bossa nova).
3-The singer is almost surely a woman (though you never know these days).

Oh, right.

And while I was searching, I've found out someone also probably asked about the same song on Line:
"http://lineq.jp/q/10020992"

Though the answer was pretty much the equivalent to Darude Sandstorm in Japan, so...