UPGRADE U ~ BEYONCE FEAT. JAY-Z

"Upgrade U" is a song recorded by American R&B singer Beyoncé Knowles for her second studio album, B'Day (2006). The song features additional vocals from Knowles' then-boyfriend and now-husband, hip hop artist Jay-Z. "Upgrade U" was generally well received by music critics who praised the assertiveness of Knowles' while singing about her desire of giving luxuries to her man. Many of them also praised the natural chemistry that Knowles and Jay-Z have in the song. "Upgrade U" started to gain popularity on R&B and hip hop radio stations in the United States. This prompted its debut on US Hot R&B/Hip-Hop Songs chart and later on the US Billboard Hot 100 chart without an official release. After its promotional release, the song peaked at number 11 and at number 59 on the Hot R&B/Hip-Hop Songs and the Hot 100 charts respectively.Although Knowles did not perform "Upgrade U" in any televised appearances, the song was a part of her set list on The Beyoncé Experience (2007), and her worldwide I Am... Tour (2009–11).