Favorite cathartic karaoke/singing scenes in drama movies

So there's a new movie in theaters right now that has a character sing a song while most of the movie she's pretty deathly serious about an existential event making up the backdrop of the plot (and coincidentally, the actor has had a similar type of singing scene in another film in the past). There are a bunch of dramas or mostly dramatic movies where the protagonist or supporting character has a cathartic scene where they cover a song via karaoke or other environments. What are some of the best ones? (Not going to say the ones I know of so people can post the movies themselves).