听起来很开心的歌（听着听着就开心的歌曲）

一些听起来很开心的歌曲包括：

1. Pharrell Williams - "Happy"

2. Katrina and the Waves - "Walking on Sunshine"

3. Bobby McFerrin - "Don't Worry, Be Happy"

4. The Beatles - "Here Comes the Sun"

5. Jason Mraz - "I'm Yours"