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This page contains a list of open datasets that were used to train the Magenta models.

Groove MIDI Dataset

The Groove MIDI Dataset (GMD) is composed of 13.4 hours of aligned MIDI and (synthesized) audio of human-performed, tempo-aligned expressive drumming. The dataset contains 1,134 MIDI files and nearly 22,000 measures of drumming.


MAESTRO (MIDI and Audio Edited for Synchronous TRacks and Organization) is a dataset composed of over 200 hours of virtuosic piano performances captured with fine alignment (~3 ms) between note labels and audio waveforms.


A large-scale and high-quality audio dataset of annotated musical notes, containing 305,979 musical notes, each with a unique pitch, timbre, and envelope. For 1,006 instruments from commercial sample libraries, we generated four second, monophonic 16kHz audio snippets, referred to as notes, by ranging over every pitch of a standard MIDI piano, as well as five different velocities.