This collection of electro-acoustic music from the legendary studios of Cologne's electronic music features the works of some of the field's most seminal proponents, such as Herbert Eimert, whose "Glockenspiel" is here. Also here are early exploratory works by composers who scaled back their investigations in later years, like Gyorgy Ligeti, whose two monumental works from the '50s -- "Glissandi" and "Articulation" -- are included in the set. Also featured are Herbert Brun, Franco Evangelisti, and the obscure but no-less-important Bengt Hambrauuse and Karel Goeyvaerts. While these may be just names to others, these early pioneers using sine-wave generators; small, primitive sound oscillation systems; tape delay systems; and manual manipulation of speed, timbre, texture, and sonance offered the future something indispensable: they manipulated natural processes of auditory awareness and created a dimensionless area of exploration and discovery which goes on with far more elaborate technology and virtually reaches into the outer dimensions of space and back. This is one of the most important volumes in the series. ~ Thom Jurek