Happy songs include: "Happy", "Shut Up and Dance", "Can't Stop the Feeling", "Uptown Funk", "Count On Me".

1. "Happy"

This song was sung by American musician Pharrell Williams and released in 2013. The melody of this song is light and cheerful, and the lyrics are simple and easy to understand, which can make people enter a happy state quickly. Its lyrics, "Because I'm happy, I want to sing, because I'm happy, I want to dance," encourage people to be active and happy in life and have positive thoughts and actions.

2. "Shut Up and Dance"

This song was sung by the American band Walk the Moon and released in 2014. The song is a joy to listen to with its light guitar and smooth melody, and the lyrics also make you feel confident and positive. The lyrics express the emotion of "Don't stop, don't ask why, just dance and enjoy life", inspiring people to move forward bravely and enjoy life.

3. "Can’t Stop the Feeling"

This song was sung by American musician Justin Timberlake and released in 2016. The song emphasizes the positive role of music, encouraging people to dance and enjoy life. The lyrics express the emotion of "I don't want to stop, I'm so happy, I can feel people are all restless together", allowing people to feel each other's emotions and happiness in the music.

4. "Uptown Funk"

This song was sung by American musicians Mark Ronson and Bruno Mars and was released in 2014. The melody of this song is unique and has a strong sense of rhythm and movement. The lyrics make people feel the emotions of justice, friendship and equality, and make people feel the positive power in the music.

5. "Count On Me"

This song was sung by American pop singer Bruno Mars and released in 2010. The theme of this song is friendship and selfless help, making people feel the importance of interpersonal relationships and sincere emotions. The lyrics express the emotion of "If you are not strong, I will be by your side, if you are helpless, support each other like friends", making people feel the warmth of friendship and the spirit of mutual help.