17, Sandra joined Arabesque, a disco group consisting of Michaela Rose and Jasmine Vetter, and would become the band's lead singer. At that time, Sandra met keyboardist Michael Cretu. They found that they shared the same birthday, albeit five years apart, and became good friends. Arabesque became successful with their cheerful music and flamboyant 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 signalled the group's break-up. Sandra and Michael Cretu, by then romantically involved, moved to Munich where Michael created his own studio, Data-Alpha, named after a song from his solo album Legionäre. Their first single together was 1984's "Japan ist weit", a German cover of the Alphaville song "Big in Japan". However, the song failed to chart with only 125 copies sold. 1985–1992: Peak of international career Sandra gained international success in 1985 with the song "(I'll Never Be) Maria Magdalena", which topped the charts in 21 countries and reached the top 10 in another five. Her first album, The Long Play (1985), reached number 12 in Germany and number 2 in Sweden. The follow-up single, "In the Heat of the Night", reached number two in Germany and the top 10 in many European countries. The song also earned Sandra second place at the Tokyo Music Festival in 1986. "Little Girl", accompanied by a music video filmed in Venice, became the third single from the album in 1986, but was met with moderate success. Shortly after the release of The Long Play, Sandra moved to London for six months to work with singing teacher Helena Shelen and take drum lessons. She also enrolled at the London Berlitz School of Languages to improve her English, returning to Germany at weekends to record new songs. Sandra's second studio album, Mirrors, was released in October 1986 with "Innocent Love" chosen as the first single, followed by "Hi! Hi! Hi!". Both of these up-tempo synth-pop offerings achieved success in continental Europe. Two further singles from the album, the ballad "Loreen" and "Midnight Man", were only moderate successes. In 1987, Sandra released a cover version of "Everlasting Love", her favourite song since childhood, to great international success. The single was a top 10 hit in German-speaking countries and charted within the top 20 internationally. The