Great "wallpaper" music, and I mean that as a compliment. Wallpaper can be esthetically uplifting, dig? But I'd never lump it in with "smooth jazz". Never.
It's not music you listen to so much as you listen at. I remember hearing it playing in a record store the week it was released and just going into a zone while it played. Then I took it home, "listened" to it, got pissed, and took it back, But I re-bought it a few years ago, and totally dig the sound that it makes in the room when it plays.
Sometimes it takes a while to learn about the different levels of music's "functions", and such was the case with this one for me. Chico's made a lot of records like that, especially in the 70s. But I find that once I figure out just what the hell he was trying to do with'em, I end up digging almost all of them.