If you accompany someone, you go somewhere with them. Ken agreed to accompany me on a trip to Africa The Prime Minister, accompanied by the governor, led the President up to the house
To go with or attend as a companion or associate; to keep company with; to go along with; followed by with or by; as, he accompanied his speech with a bow
If you accompany a singer or a musician, you play one part of a piece of music while they sing or play the main tune. He sang and Alice accompanied him on the piano
If one thing accompanies another, it happens or exists at the same time, or as a result of it. This volume of essays was designed to accompany an exhibition in Cologne