 " Cater 2 U " is a four @-@ minute long R & B ballad . In her book American Music , Nicolae <unk> found influences of quiet storm in the song 's composition . According to the sheet music published on the website Musicnotes.com by Sony / ATV Music Publishing , " Cater 2 U " was composed using common time in the key of D major with a slow tempo of 63 beats per minute . The vocal elements span from <unk> to <unk> . <unk> it consists of <unk> synthesizers " <unk> [ ing ] and <unk> [ ing ] " throughout , creating a seductive feel as stated by Dimitri <unk> of Vibe and writers of Billboard magazine . As the song progresses , it builds to a symphonic crescendo . 
