Seikilos epitaph
The Seikilos epitaph is the oldest surviving complete musical composition, including musical notation, from anywhere in the world. The epitaph has been variously dated, but seems to be either from the 1st or the 2nd century AD. The song, the melody of which is recorded, alongside its lyrics, in the ancient Greek musical notation, was found engraved on a tombstone (a stele) from the Hellenistic town Tralles near present-day Aydın, Turkey, not far from Ephesus. It is a Hellenistic Ionic song in either the Phrygian octave species or Iastian tonos. While older music with notation exists (for example the Hurrian songs), all of it is in fragments; the Seikilos epitaph is unique in that it is a complete, though short, composition.
History of the harpsichord
The earliest complete harpsichords still preserved come from Italy, the oldest specimen being dated to 1521. (The Royal College of Music in London has a clavicytherium, lacking its action, which may be older.) Even the earliest extant Italian instruments represent an already well-refined form of the instrument, showing no traces of their more primitive origin.