Robertsbridge Codex

It contains the earliest surviving music written specifically for keyboard.

The term codex is somewhat misleading: the musical section of the source comprises only two leaves, bound together with a larger manuscript from Robertsbridge, East Sussex, England.

Most of the music for the estampies is for two voices, often in parallel fifths, and also using hocket technique.

[3] The manuscript was considered Italian and connected to the main streams of the Italian trecento in its contents and in its clear use of puncti divisionis (dots of division).

Organist Charles Matthews performed Estampie in Brussels Cathedral on 7th May 2006 as part of The Spire series of concerts.