You+Me is a duo comprising Pink and Canadian singer-songwriter Dallas Green, who records as City and Colour. This song is Green's take on grey days. He told The Sun: "Sometimes the highs can be so high that the middle days can feel like the bottom."
"Islands in the Stream" was originally written by The Bee Gees as an R&B song. It was originally written by the brothers for Marvin Gaye, however it was recorded instead as a duet by Kenny Rogers and Dolly Parton with the Gibb Brothers also contributing vocals.
Jay-Z's 2012 "Glory" features his daughter Blue Ivy Carter's cries and coos. At less than two days old, she became the youngest ever credited artist to feature on a Billboard chart when the song debuted on R&B/Hip-Hop Songs at #74.