. . . WHIPLASH. During the climax of this film, the abusive music instructor reduced a student to jelly by viciously interrogating the drummer as to whether he was ahead of or behind the beat (aka, "fast or slow"). I would not necessarily wish to presume (or take it upon myself) to gauge whether the female soloist here is sharp, flat, or "on-key." However, when my mother (a director of many choirs, as well as being a long-time school teacher and veteran of putting on many Christmas Pageants) saw MGM CHRISTMAS TRAILER (aka, JUDY GARLAND SINGS "SILENT NIGHT") Mom immediately volunteered, "She's flat." But there was some musical group (perhaps The Beatles) who pondered whether someone could warble off-key, and still be a worthwhile human being. I think that this pop song concluded in the affirmative.