As a bassist he could never really be a sideman. He was always the anchor. He drove the beat. even if it was behind Miles Davis'a horn.
A good bassist determines the direction of any band.
I consider myself a bassist first.
That song "Futuro" was written by Quique Rangel, the bassist. I wouldn't know how to explain the song, but each would have to give their own interpretation. If the lyrics generate that message for you, then that's good.
Peter Baltes was the best bassist I ever played with.