Kelly Key is a Brazilian singer and teen idol. Born Kelly de Almeida Afonso in Rio de Janeiro, Key released her first, self-titled album in 2001 at the age of 17. Her first single was the song "Escondido" ("Hidden") in which she sang 'We went out to make out and to make love'. The song received lots of airplay thanks to her then boyfriend Latino.

The song "Baba baby" was one of the most played on the radio and thanks to it, the album went double platinum in Brazil, and released in Portugal and Chile.

Furthermore, Key's first two singles comprised highly explicit sexual content; although, the albums appealed predominantly to minors. The album would later tender two more successful singles: "Cachorrinho" ("Little Dog"), about a petulant man and his eventual apprehension of the reality of his relationship with his female boss, and "Anjo" (Angel), a sad ballad. Both songs received major airplay and were big radio hits.

She spawned a doll, a shoes line and lots of other products target at young girls.

In the same year, Kelly received substantial exposure after appearing on the covers of various gossip magazines due to her not-friendly divorce with Latino and participation in a recent Playboy exposé.

2003 saw the release of Key's second album Do Meu Jeito (My Way). Following 'Baba's' legacy, the album's first single recited Key's difficult relationship with a minor.

In 2005, Key released her second self titled album. In response to commercial demands the album explicitly targets children. The album's biggest hit was the song "Sou a Barbie Girl", a remake of Aqua's 1998 hit "Barbie Girl". "Sou a Barbie Girl' reached #1 in Brazilian charts and the album went gold.