Alannis Morissette filled in last minute on the Jimmy Kimmel show. She was called in due to Green Day having to cancel their scheduled appearance. Of course they had to pull out of the gig because Billie Joe is headed to rehab, which is a completely different story altogether.
Billie Joe Armstrong isn’t the only member of his family that can sing. His dog likes to howl along as the Green Day singer plays the piano. Billie has been putting up the incredibly cute footage online and fans can check it out here.