FoxDot is a combination of two things: an interactive Python mini-text-editor and a library for making algorithmic music with code. It has been designed for Live Coding music, a practice of performing music with programming languages in front of a live audience. If you would like to know more about Live Coding, checkout toplap.org for more information!
There are several languages used to Live Code music and each has their own identity, syntax, and philosophy. One of the most widely used languages is SuperCollider, which is actually used by FoxDot to create sounds. It is extremely powerful and flexible but the trade-off is that it often requires a large amount of typing and has a fairly steep learning curve. FoxDot could be considered as a user-friendly interface to a subset of SuperCollider’s many great features.
Another language that is becoming increasingly popular in the Live Coding community is TidalCycles (often referred to as just Tidal for short). This is based in the functional programming language called Haskell and chains together pattern-making functions and applies them to the playback of audio samples (although it is also using SuperCollider now create sound as well). One of the few drawbacks to Tidal is the difficult install on Windows machines but it is still in development.
FoxDot, like Tidal, is a language that is used for describing musical patterns, but in a slightly different way. It gives certain data structures, called Player Objects, instructions defined by traditional musical concepts such as scales, octaves, and notes to play until stopped. For more information on how to get started with FoxDot, check out the start Starter Guide.