When the director, Joe Mankiewicz, asked me to be in the picture, I told him I couldn’t sing and had never been in a musical, but he said he’d never directed one before, and that we’d be learning together. Frank Loesser, who wrote the music for the Broadway show on which it was based, recruited an Italian singing coach to teach me to sing, and after a couple of weeks with him I went to a recording studio with Frank to record my songs, which were to be synchronized later with shots of me mouthing the words on film. I couldn’t hit a note in the dubbing room with a baseball bat; some notes I missed by extraordinary margins. But the engineers kept telling me to do them over again, and they would stitch together a word here, a note there, until they had a recording that sounded like I’d sung the bars consecutively. They sewed my words together on one song so tightly that when I mouthed…