Sergio Dalma started his career singing in bands and doing chorus, until he won the TV program "Gent d'aqui", in the Catalan station of TVE, which won him a regular contract to sing in the Shadows night-club in Barcelona. Sergio signed up with the record company Horus, and edited his first album, "Esa chica es mia", in 1989. Though it wasn't very successful, the company gave him another chance with "Sintiéndonos la piel", in 1991. That same year, Sergio Dalma was chosen to represent Spain in the Eurovision Song Contest with the song "Bailar Pegados", where he finished in the 4th position. This was his call to fame.

One year later, he published "Adivina", which arrived to number one in charts thanks to the song "Ave Lucía". Afterwards, he signed with Polygram, with whom he edited four albums, and later with his current record company, Universal, with whom he has published another four.

Sergio Dalma has sung in Spanish for most of his career, but being born in Catalonia (Spain) he speaks Catalan too. His last two albums, "Lo Mejor de Sergio Dalma" and "Todo Lo Que Quieres", contain songs in Catalan. This album also contains songs in Galician and he has also sung in Italian.

Sergio Dalma married Maribel Sanz on February 22, 1994. His only son, Sergio, was born on August 18, 1995 . The couple later divorced, and Maribel became, for a while, a regular of celebrity magazines and TV programs.