At the beginning of the seventies, Norbert Krueler used simple radio tubes, a microphone and a regular acoustic guitar to create new sound effects.

A local concert promoter became aware of the young artist and enabled him to support many acts of popular German Krautrock bands like Grobschnitt, King Pin Meh, Birth Control and Kraan.

He availed himself of the technical progress and added rhythmic experimental music compositions to a laser show for his club audience.

With the help of the musicians Michael Jaspers and Detlef Reder, Norbert released, under the pseudonym Shamall, the debut single My Dream in 1986.

The music style was Italo disco, and My Dream reached number 9 on the German DJ Top 40 charts.

The following longplayer Mirror to Eternity (1993), In Search of Precision (1994) and This Island Earth (1997) were reviewed by Matt Howarth at Space.com as "music with fascinating sound and emotional depth".