Purcell's aria "Sound the Trumpet" is not to be confused with the duet of the same title for two counter tenors, which occurs in the 1694 "Ode for the Birthday of Queen Mary - Come Ye Sons of Art," written in honor of Queen Anne's six year-old son. Purcell's trumpet music was inspired by the playing of the Shore family, who were King's treumpeters, and this aria does have a trumpet obligato.
A "cebell" is a fast gavotte-like English dance, popular in the 17th century, and was used by Purcell and his contemporaries. The name is derived from an air from a Lully opera, "Atys," associated with the goddess Cybele. The tune is an interlude from Clarke's "Music on the Death of Purcell." Both tunes are characteristic of the style and sound of the trumpet, so were considered to be very suitable for transciprtion. - the publisher