Billie Joe sings new short song at his final performance for the American Idiot musical

Last night was Billie's final performance as St. Jimmy in the American Idiot musical. Billie had tweeted earlier the day :

"St Jimmy is sad.. This is my last day.. Tonight I'm gonna fuck shit up!! This is not goodbye.. This is so long.. St jimmy rules!"

He added a new little tune to the beginning of Time of your Life, which closes out the show.

Listen to the audio below, or visit the musical site to download it. 

You can view the lyrics to this song in this photo posted on Twitter by @Elderta
Here's a video of Billie performing this from YouTube.