Several samples of liquid flowing and broken glasses are often used, manipulated with many audio signal processing techniques. Other complex textures are created using audio samples of common objects as a radio, white and pink noises, etc.
All pitches and melodies (except for the bass fundamentals) were built using a 12 tone row with some of the many variations proposed by Schoenberg's twelve-tone technique.
Drum 'n' Glass was originally composed for Bleu Dance Studio and recorded in a forthcoming videoclip
Listen to Drum 'n' Glass
. 03 - Drum 'n' Glass by eventhorizonaudio
More about Twelve-Tone technique:
Trinity College, Connecticut
More about Concrete Music:
The Art of Noise