MusicLM is an AI tool that generates high-fidelity music text based on provided prompts and datasets. The tool uses a hierarchical sequence-to-sequence model to generate music that remains consistent for several minutes and outperforms previous systems in terms of audio quality. It also has the ability to transform melodies based on text prompts and can generate audio based on diverse tests and samples. Additionally, MusicLM provides a dataset composed of 5.5k music-text pairs with rich text descriptions provided by human experts.