virtual Moog synthesizer

Roberts tapped out a handful of notes on a virtual Moog synthesizer. At the click of a mouse, the software extrapolated them into a short tune, complete with key changes and recurrent phrases. The software learned to do that by analyzing a database of nearly 4,500 popular music tunes.

synthesizer 

Pronunciation: /ˈsɪnθɪsʌɪzə/ 

(also synthesiser)

NOUN

An electronic musical instrument, typically operated by a keyboard, producing a wide variety of sounds by generating and combining signals of different frequencies.

Moog

Pronunciation: /məʊɡ/  /muːɡ/ 

Music

NOUN

A trademark for: any of a range of electronic keyboard synthesizers.

Origin

1960s; earliest use found in The Post-Standard. From the name of Robert A. Moog, U.S. engineer, inventor of the forerunner to the commercially available synthesizer, and head of Moog Music Inc. (formerly the R. A. Moog Co.), which produced the later instruments.