Song of the Day: Girlfriend, words and music by Jason Kasher Hindlin and Charlie “Perfect Pitch” Puth, who turns 29 today. This is really a fun song with an adorable music video (even with the Old School Tube Socks!). Check out the video single, the Haywyre Remix and a live performance of the song on the The Late, Late Show with James Corden [YouTube links]. Happy birthday to this genuinely talented musical prodigy.