CSIRAC Council for Scientific and Industrial Research Automatic Computer), originally known as CSIR Mk 1, was Australia's first digital computer, and the fourth stored program computer in the world.

CSIRAC, the first computer to play music, did so publicly in August 1951

The oldest known recordings of computer generated music were played by the Ferranti Mark 1 computer, a commercial version of the Baby Machine from the University of Manchester in the autumn of 1951.

The songs were captured by the BBC in the Autumn of 1951 during a visit to the University of Manchester.

The recording has been unveiled as part of the 60th Anniversary of "Baby", the forerunner of all modern computers.
The tunes were played on a Ferranti Mark 1 computer, a commercial version of the Baby Machine
"I think it's historically significant," Paul Doornbusch, a computer music composer and historian at the New Zealand School of Music, told BBC News.
"As far as I know it's the earliest recording of a computer playing music in the world, probably by quite a wide margin."

Illiac Suite

It is generally agreed upon that the Illiac Suite is the first piece of music composed by an electronic computer.[1] The piece, programmed by the computer and performed from notation, in the form of a string quartet, was the result of a collaboration by Lejaren Hiller and Leonard Issacson in 1956. At the time, both composers were Professors at the University of Illinois at Urbana-Champaign

The Illiac Suite is an experiment to test various algorithms for composition. It can be said that it does not aim to be, in a strict sense, "great" or "beautiful" music, but a clever utilization of a computing machine to see which musical effects a certain rule produces. It consists of four movements, called experiments: the first is about the generation of cantus firmi, the second generates four-voice segments with various rules, the third deals with rhythm, dynamics and playing instructions, and the fourth with various models and probabilities for generative grammars or Markoff Chains.


IBM 1961