PianoCoRe: Combined and Refined Piano MIDI Dataset

PianoCoRe is a large-scale piano MIDI dataset that unifies and refines major open-source piano corpora. It contains 250,046 performances of 5,625 pieces written by 483 composers totaling 21,763 hours of performed music. PianoCoRe provides the most diverse composer- and composition-annotated piano MIDI data. The metadata includes deduplication flags, MIDI quality labels and precise note-level score-performance alignments. The alignments are refined using a Refined Alignment for Scores and Performances (RAScoP) pipeline, which ensures perfect note-by-note synchronization for expressive performance modeling. Related Resources: Publication: https://doi.org/10.5334/tismir.333 Project repository: https://github.com/ilya16/PianoCoRe Hugging Face: https://huggingface.co/datasets/SyMuPe/PianoCoRe