I played music on May 11, 2019. I lived coding with a programing language called Ruby.
Live coding is most prominent as a performing arts form and a creativity technique centred upon the writing of source code and the use of interactive programming in an improvised way. Live coding is often used to create sound and image based digital media, as well as light systems, improvised dance and poetry. It is particularly prevalent in computer music usually as improvisation, although it could be combined with algorithmic composition.
Ruby is an interpreted, high-level, general-purpose programming language. It was designed and developed in the mid-1990s by Yukihiro Matsumoto in Japan.
In short, modern musicians can write code and music to broaden the range of performance.