A person who attempts to listen to all of Scarlatti’s 550 harpsichord sonatas may come to feel that they all eventually become indistinguishable. Enter the glorious literalism of the internet: here is each piece played at the same time, in the version of Scott Ross, resulting in a texture that commenters compare to Penderecki, Messiaen, Ligeti, Merzbow, and Metal Machine Music. Allow us one more analogy: this is the musical version of Soylent, compressing a composer’s life work into an oddly compelling beige/gray smoothie sludge.