The horns were arranged by trumpet player Jim Price, who along with Bobby Keys on sax, provided the brass on records and tours for The Stones in the early '70s. This was the last time Price recorded with The Stones. He went on to produce other artists, including Joe Cocker.

TRIVIA:
Keith Richards played bass and shared lead guitar duties with Mick Taylor.
http://youtu.be/2lzP7Q34PQw