At the time, Lemos was already an experienced studio man, having first emerged on the music scene in a duo with Filipa called Tó & Marlene, playing in county fairs during the summer seasons.

Later, Filipa joined the short-lived act Taitibitileus, which managed to score a minor novelty hit with the song "O Meu Abião."

Longing for a change of pace, the siblings, joined by common friend Marante, started dabbling with Euro-dance, all of them inspired by widely popular acts like Ace of Base, Whigfield, and Corona.

Consisting of re-recordings of all the tracks on the demo in more professional settings, debut album Eu Sei, Tu És... was released in early 1998.

This record marked the appearance of Rui Batista, who became the group's mainsongwriter (the first album had its lyrics written by Filipa) from that point forward, although he never became an official member.