•MuseNet: a deep neural network created by OpenAI that can generate 4-minute musical compositions with up to 10 different instruments. •Uses the same general-purpose unsupervised technology as GPT-2, a large-scale transformer model. •Model is trained on data from MIDI files, allowing it to generate samples in a chosen style. •Uses positional and timing embeddings, as well as structural embeddings to give the model more context. •Can combine styles from country to Mozart to the Beatles.