Kaëll studied music in Antwerp, after finishing school he landed a job as a singer and in 1982 he took part in the Baccara-beker, which he won.

His next single La mamadora did well in the Flemish charts which he released in 1986.

Kaëll took part again in Eurosong in 1987 with the song Carrousel, he was a favourite to win and represent Belgium at the Eurovision, however at the close of voting Carrousel had picked up 58 points placing Kaëll in second place, the winner was Liliane Saint-Pierre.

In 1997 Kaëll was offered by vtm to host the talent shows Soundmixshow (Dutch counterpart of the UK's Stars in Their Eyes) and Rad van Fortuin.

In 2010, in response to rumors, Kaëll came out as homosexual; his partner is television presenter Luc Appermont.