Mass - MIDI Generator

Mass - MIDI Generator is a fast, intuitive music production tool that turns ideas into ready-to-use MIDI. Generate chord progressions, melodies, basslines, and drum grooves in seconds with scale-aware, tempo-synced patterns. Refine your results with controls for length, density, swing, and humanize, then preview instantly with real-time playback. One-click MIDI export and seamless DAW integration make it easy to finish tracks in Ableton Live, FL Studio, Logic Pro, and more. Ideal for producers, beatmakers, and composers who need rapid idea generation, flexible editing, and a smooth workflow for composition and beat making.

Download and install the app, then launch it and create a new session. Set your project key, scale, tempo, and time signature to match your track. Choose what to generate such as chords, melody, bass, or drums, tweak length, density, swing, and humanize, then tap Generate. Press Play to audition and edit notes in the piano roll, or regenerate to explore variations until it fits your song. Export or drag the MIDI into your DAW, save presets or templates, and repeat for additional parts.