A man sings. He is not a singer. In fact, he sings terribly but he likes to sing and he does with enthusiasm. He's not embarrassed by his lack of singing ability. He doesn't care about his wife's reactions either. He just sings from his heart and doesn't give a damn about the rest of the world.
For instance, Jack Nicholson in Heartburn.
https://www.youtube.com/watch?v=bqKrFhiJocQ
