1990. Cretu's first solo album was released in 1979, titled Moon, Light & Flowers. It contains the singles "Shadows Over My Head" and "Wild River" released in 1978, and "Moonlight Flower" and "Love Me" (the latter two singles became popular hits in the Philippines) from 1979. His second album, Legionäre, was released in 1983 and features German lyrics sung by him. Cretu's third solo album was titled Die Chinesische Mauer and was released in 1985. The literal English translation is The Chinese Wall. As with the second album, it features German lyrics sung by Cretu and is co-produced by Armand Volker. This album was also released as a separate album with English-language lyrics and a different track listing under the name The Invisible Man. Several of the tracks on The Invisible Man were edited slightly and, therefore, had different lengths than the German-language versions on Die Chinesische Mauer. This featured the song "Samurai", which became a hit. In 1985, Cretu produced, arranged, and played the keyboards, drums, and programming on The Long Play (1985), the first studio album from German pop singer Sandra. The two began a relationship, and were married in 1988. In the 1980s, Cretu took over production for the pop quartet Hubert Kah and started writing songs with the band leader Hubert Kemmler, achieving a number of hits. Among his other work, Cretu was also one of the producers of Mike Oldfield's 1987 album Islands and the producer of Peter Schilling's 1989 The Different Story (World of Lust and Crime) album. In 1992, Cretu worked with Peter Cornelius on Return to Innocence, to provide the guitar riffs. For the third album, Cretu teamed up with Jens Gad to work together on Le Roi Est Mort, Vive Le Roi! and launched in 1998 a new trance project Trance Atlantic Air Waves and the album The Energy of Sound. He owned the A.R.T. Studios in Ibiza before moving to a new mansion in the Ibiza hills. His former house, near Sant Antoni de Portmany on the western coast of Ibiza, was a Moroccan-style mansion that was designed and built by Bernd Steber and Gunter Wagner in more than nine years. It also featured a new recording studio. The Spanish High Court deemed the house to have been built illegally and in infringement of Spanish environmental regulations which led to the €18 million villa being razed in May 2009. 1988–present: