Purcell Society Edition Volume 7 contains the 10 trio sonatas by Purcell that were first published by his widow in 1697 as Ten Sonatas in Four Parts. These sonatas, Z. 802-811, are scored for the same forces as Purcells 1683 set of trio sonatas (2 violins, bass viol/cello, and harpsichord or organ). In the 1697 publication, the string bass and keyboard were counted as two parts, and the sonatas designated as of four parts, whereas in the 1683 set they were counted as one, and the sonatas were therefore described as being in three parts.
Edited under the supervision of the Purcell Society by Michael Tilmouth.