
Second single, " Secret Land", met with even greater success and is now considered one of Sandra's biggest hits while " We´ll be together", released as the third single to a big success, was the first song co-written by Sandra. Into A Secret Land moved from electro-pop to more sophisticated areas of pop, what was showcased by the first single, " Heaven Can Wait", a top 20 European hit. Sandra and Michael married in January 1988 and relocated from Munich to the Spanish island Ibiza to work on what would be Sandra's third studio album. The single was a top 10 hit in German-speaking countries and charted within top 20 internationally. The song was included on Sandra's first retrospective album, Ten On One, which met with success and spawned another top 10 single, " Stop For A Minute". In 1987, Sandra released a cover version of " Everlasting Love", which had been her favourite song since childhood, to a great international success. Two further singles from the album, ballad " Loreen" and another danceable song " Midnight Man" met only with moderate success. Both songs were synthpop up-tempo offerings and met with considerable charts success in Europe. Sandra's second studio album, Mirrors, was released in October 1986, with " Innocent Love" chosen as the first single, followed by " Hi! Hi! Hi!". She also joined a language school, where she worked on her English skills, while she spent weekends in Munich recording new songs. Shortly after the release of The Long Play, Sandra moved to London for six months, where she worked with singing instructor Helena Shelen and took drumming lessons to practice her timing. " Little Girl" became the third single from the album in 1986, with the music video filmed in Venice, but met with moderate success. Her first album, The Long Play (1985), reached number 12 in her home country of Germany and was a top 10 success in Scandinavia.The follow-up single, " In The Heat Of The Night", continued her international success, reaching number two in Germany and top 10 positions in many European countries. The song also earned Sandra second place at the Tokyo Music Festival in 1986. Sandra won international success in 1985 with a song " Maria Magdalena", which topped the charts in 21 countries worldwide and reached top 10 in further five. However, the song failed to enter any charts and only 125 copies of the single were sold. Their first single together was 1984's "Japan ist weit", a German cover of the Alphaville song "Big in Japan". Sandra and Michael Cretu, at that point already romantically involved, moved to Munich, where Michael created his own studio, Data-Alpha, named after a song from his solo album Legionäre. Arabesque became successful with their cheerful music and flamboyant, sometimes daring costumes, winning a massive following in Japan and scoring a top 10 hit in Germany in 1981 with "Marigot Bay".After nine albums, emerging differences in musical interests of group members and decreasing popularity of disco music signaled the group's break-up. They found that they share the same birthday, albeit five years apart, and became good friends. At that time Sandra met a keyboardist named Michael Cretu.

In 1979, now seventeen, Sandra joined Arabesque, a disco group consisting of Michaela Rose and Jasmine Vetter, and would become the band's lead singer.

The single, however, performed poorly on charts at that time dominated by disco mania. The impromptu performance gained considerable recognition and led to the release of her first single, which was a children's song about a pet dog, " Andy Mein Freund".

She was only a member of the audience, but when all participants had finished performing and the jury was discussing the results, Sandra walked onto the stage, persuaded the DJ to put on the German version of a song made famous by Olivia Newton-John and started singing. In 1975, at the age of thirteen, Sandra went with her mother to see Young Star Festival, a Saarbrücken talent competition. Sandra showed an early interest in music and dancing, starting to learn classical ballet at the age of 5, which she would continue for ten years, and receiving guitar lessons when she was 10 years old. She also had an older brother, Gaston, a paraplegic who died in 1995. Her father, Robert, who owned a wine store in Saarbrücken, is French and her mother, Karin, who worked in a shoe store, is German. Sandra Ann Lauer was born in the German town of Saarbrücken, close to the French border.
