"The song is from between late 1980's to the early 2000's.
Back in the late 90's-early 00's I downloaded a collection of Sailormoon AMVs.
Like this one: https://www.youtube.com/watch?v=YAPTCmsi6i0
I thought I was listening to US artists unknown to me,
but it turns out that quite a few were from the Sailormoon US OST album(s).
Next to that one I remember a "Carry on", "The power of love" and the song that I am looking for,
which I only remember as "The other power of love" song."