Duo is an acoustic album by
Richard Marx and
Vertical Horizon vocalist
Matt Scannell.[1] The disc was released on May 12, 2008, exclusively through RichardMarx.com,[2] and was later made available for sale at their concerts together as well. Marx and Scannell exhibit both of their acclaimed works. Marx remade a version of "Always On Your Mind," for his 2008 album Sundown.[1] The disc is predominantly done on acoustic guitar aside from the track "Give You Back" performed on piano.