An important new enhancement was the arrival of computer systems to compose music, as opposed to manipulating or building sounds. Iannis Xenakis began what is named musique stochastique, or stochastic music, and that is a composing approach that makes use of mathematical probability methods. Different probability algorithms were applied to produce

In the mid-nineteen seventies, Eno coined the expression "ambient music" to explain music which was created to be listened to in the history and create a calming and contemplative environment. Eno's albumThis he described as getting the kind of music that could be played for the duration of a dinner to create a background ambiance for that action,