"Down Low (Nobody Has to Know)" is an R&B song about infidelity by American singer and songwriter R. Kelly featuring The Isley Brothers, released in 1995 from Kelly's second and self-titled album (1995). The song peaked at number four on the Billboard Hot 100 and number one on the Billboard R&B Singles Chart for seven weeks, making it Kelly's fifth single to do so on the latter. It also gave the Isley Brothers their first Top 40 pop record since 1980's "Don't Say Goodnight (It's Time For Love)", and was Kelly's third top 5 pop record. The lyrics are from the perspective of a woman's affair partner, who tells her to keep their relationship a closely guarded secret.