Dear Jara, It was indeed the Olympia Brass Band, in 2 shots playing "Just a Closer Walk With Thee" and "Joe Avery's Tune", in the 1973 8th James Bond (debut for Roger Moore) film 'Live and Let Die'. Trumpet player Alvin Alcorn has a one word speaking part as an assassin. Do you know what the word was? (I do.) Kind regards, Bill.