Lamar's Pet the Dog with Rayna when she's smeared by the tabloids, telling her she should be nothing but proud of who she is, and screw anyone who thinks differently.
Avery sending an egg whisk to Scarlett before her professional debut, referencing his first encouragement that she could make it as a singer.
Glenn coming back to Juliette after her mother's death, despite how badly the two part terms.
After the car accident seems like it's destroyed Rayna's singing ability, she's roped into a concert performance where the whole crowd starts singing for her, leading her to regain her voice.
A disguised Juliette (on tambourine) duetting with a busking Avery to an appreciative crowd of passersby, providing her with some much-needed positive vibrations after the rough times she's had lately.
Teddy telling Maddy she's wrong about him hating music, and he doesn't even hate Deacon. Deacon is the reason he has her, after all.
Juliette and Avery getting married. If there's one character on the show who deserves some happiness, it's Miss Barnes.