This was an English-language adult contemporary pop song that came out sometime in the late 1970's or early 1980's. The vocalist was male. It is still played now and then on pop and A/C stations, so it isn't all that obscure. It must have been something of a hit. I guess the genre would be adult contemporary/romantic.
This was a saxaphone-driven song. I'm not sure if the chorus itself was a wordless saxaphone line, but the song did have a prominent sax line that was repeated several times. It was a fairly slow, relaxed sax line. I'm not a musician, but it sounds like a tenor sax. The notes were not played particularly high or low-pitched.
The vocalist sounds like Gerry Rafferty. However, I went though the sound clips on Rafferty's 'Greatest Hits' album and none of them matched. This song is NOT 'Baker Street.' To give you a point of reference, the notes on Baker Street are played higher and faster than the notes in the song I am thinking of. I can also tell you that the vocalist is not James Taylor.
I don't remember any of the lyrics, since the lyrics are delivered in a fairly soft tone. This is a slow-sax-driven song.



Just first one that came in my mind: Rick Springfield - Don't Walk Away