PrismMesh

Free sheet music library

Find public-domain scores by instrument and difficulty. String quartets come split into each instrument's part, and every score can be transposed, played and downloaded as PDF, MIDI or MusicXML in your browser.

283 works

Difficulty is an automatic estimate computed from the score. It adds notes per second at the marked tempo (30%), the share of notes shorter than 0.15 s (15%), how far the part goes above the instrument's comfortable range (15%), the share of leaps of an octave or more (10%), double stops and chords (10%), the key signature and accidentals (10%), and tuplets and ties (10%), then cuts the total into five levels, with separate cut points for strings and for piano. Parts of the same piece often differ.

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