It was combined with EPs 1,000 Hours and Slappy to make 1,039/Smoothed Out Slappy Hours, which is also not that known but is getting more known because they play a lot of their songs from that album again.
Person 2: I didn't know they had a song like that. From what album?
Person 1: It's from 39/Smooth- their first album.
Person 2: Huh? I thought American Idiot was their first album.
Person 3: I thought 21st Century Breakdown was.
Person 1: Well, now you know it isn't.