Magenta is an open-source research project exploring machine learning as a creative tool for music and art. Originally developed by researchers associated with Google Brain, Magenta has produced numerous models, datasets and creative tools for music generation, MIDI manipulation and neural audio synthesis. Its current ecosystem includes Magenta RealTime 2, an open model and real-time neural synthesis engine for building interactive AI musical instruments, alongside projects such as Magenta Studio and DDSP. Magenta Studio provides music plugins for Ableton Live and standalone applications based on Magenta's open-source models. The broader project is aimed at developers, researchers, musicians and creative technologists rather than casual users looking for a simple song-generation website.