Mariah Carey (born March 27, 1969 or 1970) is an American singer, songwriter, actress, and record producer. Referred to as the "Songbird Supreme" by Guinness World Records, she is noted for her five-octave vocal range, melismatic singing style, and signature use of the whistle register.

She rose to fame in 1990 after signing to Columbia Records and releasing her eponymous debut album, which topped the U.S. Billboard 200 for eleven consecutive weeks. Soon after, Carey became the only artist ever to have their first five singles reach number one on the U.S. Billboard Hot 100 chart, from "Vision of Love" to "Emotions".

Justin Randall Timberlake (born January 31, 1981), occasionally known by his initials JT, is an American singer, songwriter, actor, dancer, and record producer.

Raised in Tennessee, he appeared on the television shows Star Search and The All-New Mickey Mouse Club as a child. In the late 1990s, Timberlake rose to prominence as one of the two lead vocalists and youngest member of NSYNC, which eventually became one of the best-selling boy bands of all time.

Timberlake began to adopt a more mature image as an artist with the release of his debut solo album, the R&B-focused Justified (2002), which yielded the successful singles "Cry Me a River" and "Rock Your Body", and earned his first two Grammy Awards.