Parthenia or the Maydenhead of the first musicke that ever was printed for the Virginalls was, as the title states, the first printed collection of music for keyboard in England. 'Virginals' was a generic word at the time that covered all plucked keyboard instruments – the harpsichord, muselaar and virginals, but most of the pieces are also suited for the clavichord and chamber organ. Though the date is uncertain, it was probably published around 1612. The 21 pieces included are ascribed to William Byrd, John Bull, and Orlando Gibbons, in three sections.

The title Parthenia comes from the Greek parthenos meaning "maiden" or "virgin." The music is written for the Virginals, the etymology of which is unknown, but may either refer to the young girls who are often shown playing it, or from the Latin virga, which means "stick" or "wand", possibly referring to part of the mechanism that plucks a string in the harpsichord family of instruments. The "Maydenhead" refers to the maiden voyage or, in this case, the first printing of Parthenia. The dedication to the first edition opens with the phrase: The virgin PARTHENIA (whilst yet I may) I offer up to your virgin Highnesses.