当Uli Kusch遇见比利时歌手Magali Luyten并想与她的乐队录制专辑时，Beautiful Sin开始了。他同意为乐队制作一张演示CD，但唱片从未发行。
其余的阵容将包括Pagan的Mind的JørnViggo Lofstad和Steinar Krokmo（来自于Uli的养家之地，来自挪威），以及Kusch的总体规划伴侣Axel Mackenrott。
在The Unexpected发行后，Carl Johan Grimmark被添加为第二吉他手。
Beautiful Sin is a European power metal band. They are heavily influenced by the popular power metal band Helloween.
Beautiful Sin began when Uli Kusch met Belgian singer Magali Luyten, and wanted to record an album with her band. He agreed to produce a demo-CD for the band, but the recordings were never released.
A few years later, Uli was considering creating a new project next to Masterplan in which he would write all the music himself. In autumn of 2004 he began talking to Magali – this time about forming a band together.
Rounding out the rest of the line-up would be Pagan’s Mind’s Jørn Viggo Lofstad and Steinar Krokmo (coming from Uli’s adopted home, Norway), and also Kusch’s Masterplan-mate, Axel Mackenrott.
After the release of The Unexpected, Carl Johan Grimmark was added as a second guitarist.