As part of Black History Month, Radio 1Xtra celebrates 5 albums that altered the musical landscape at the time of their release. We hear from artists, DJ's and listeners on what makes these albums so special, then you sit back as we play a masterpiece album out in full un-interrupted. Trevor Nelson is in for Ronnie to kick off Radio 1Xtra's Masterpieces with Stevie Wonder and the album considered to be the signature album of his career - Songs in the Key of Life.