OpenMusic

Allows programming by dragging and dropping icons representing Lisp functions, making complex Lisp code accessible through a graphical environment, as described in the README.

Provides pre-built classes for musical data, notation, MIDI, and sound signals, with graphical editors for multiple representations like piano-roll and common notation.

Handles different views such as notation, piano-roll, and sound signals, enabling composers to visualize and edit music processes comprehensively.

Existing Common Lisp code can be used directly, and new code can be developed visually, bridging traditional and visual programming seamlessly.