Sergei Prokofiev – Toccata, Op. 11. The composition is in the public domain (Sergei Prokofiev died in 1953). Piano solo arrangement, 15 pages, two staves, with chord symbols above the staff. Note: this score was produced with an AI-assisted transcription tool (PopPianoAI) from a piano recording, then formatted by the arranger. It is a playable arrangement, not an urtext edition — meter, ornaments and voicing may differ from the original score. Reference recording: "Prokofiev: Toccata in D minor, Op. 11 [Rozanova]" (YouTube). The video is not by the arranger.