What is the jazzy trumpet song from pineapple express that playing in background first time Seth Rogen goes to get weed James Franco?

The song playing in the background when Seth Rogen goes to get weed from James Franco in Pineapple Express is "The Sidewinder" by Lee Morgan.

It's a classic jazz tune that perfectly sets the scene for the laid-back, cool vibe of their friendship and the setting of the movie.