Important session musicians also took part in the studio. Sugar Blue, born James Whiting, played harmonica. Mel Collins added saxophone. Ian MacLagan played electric piano. Collins had passed through King Crimson, while MacLagan had been a member of Faces with Ron Wood before appearing here around the Stones. Sugar Blue’s story is unique. He was from Harlem, but at that time he was playing in the Paris metro when someone from the Stones’ record company heard him and brought him into the sessions. That journey, from the Paris metro to “Miss You,” is by itself a small mythology of the song.