He is particularly remembered in Britain for a guest appearance he made on the Morecambe and Wise Christmas Show in 1971 where Eric Morecambe ( who called him Andrew Preview ) pretended to play the Piano Concerto by Edvard Grieg with Previn conducting . Previn is particularly remembered in Britain for his performance as `` Mr. Andrew Preview '' ( or `` Privet '' ) on the Morecambe and Wise Christmas Show in 1971 , which involved his conducting a performance of Edvard Grieg 's Piano Concerto with Eric Morecambe as the comically-inept soloist .