Need you ask?
What's your favorite "feel good" song?
Going to California by Led Zeppelin always makes me smile.
Kashmir by led zeppelin
good vibrations
Some Girls by the Turtles ..
Yay!!! I went searching for a music Q and I found it :) this song makes me happy then ..... Cos I'm the best around ..,
There are a lot, but this is the first one that came to mind today.