Melrose is both a language and a tool to create and listen to music interactively, The language uses musical primitives (note, sequence, chord) and many functions (map, group, transpose) that can be used to create more complex patterns, loops and tracks. Melrose uses MIDI output to produce sound by any (hard or software) device attached. Melrose can also react on MIDI inputs to start, record and stop playing musical objects. A plugin is available for Microsoft Visual Studio for the best usage experience. For a quickstart, without any installation, you can use the Melrose playground.