Once More with Feeling (2009) on Netflix

Plot summary

Frank Gregorio is a psychiatrist, the husband of Angelina and a grandfather through his eldest daughter, Lana. Karaoke reaches him from two directions, the parent troubles of one of his patients and his young granddaughter's birthday party, and it revives a wish to sing professionally that he had long set aside. Angelina takes his practicing as preparation for the wedding of their younger daughter. Frank also befriends Lydia, a karaoke devotee with plans of her own for him. Lana, sarcastic and harried, worries about her weight after a pregnancy and about her marriage, and considers an affair with a police officer as well as plastic surgery.