Sometimes a flashback is inserted into a film even though there was none in the original source from which the film was adapted. The 1956 film version of Rodgers and Hammerstein's stage musical "Carousel" used a flashback device which somewhat takes the impact away from a very dramatic plot development later in the film. This was done because the plot of "Carousel" was then considered unusually strong for a film musical. In the film version of "Camelot" (1967), according to Alan Jay Lerner, a flashback was added not to soften the blow of a later plot development but because the stage show had been criticized for shifting too abruptly in tone from near-comedy to tragedy.