Barley Break (a mock-battle follows a real one), a light-hearted piece which follows the progress of a game of "barley-break", a version of the game now known as "piggy in the middle", played by three couples with a ball. My Ladye Nevells Booke also contains two monumental Grounds, and sets of keyboard variations of variegated character, notably the huge set on Walsingham and the popular variations on Sellinger's Round, Carman's Whistle and My Lord Willoughby's Welcome Home. The fantasias and voluntaries in Nevell also cover a wide stylistic range, some being austerely contrapuntal (A voluntarie, no. 42) and others lighter and more Italianate in tone. (A Fancie no 36). Like the five-and six-part consort fantasias, they sometimes feature a gradual increase in momentum after an imitative opening paragraph. Consort music The period up to 1591 also saw important additions to Byrd's output of consort music, some of which have probably been lost. Two magnificent large-scale compositions are the Browning, a set of 20 variations on a popular melody (also known as "The leaves be green") which evidently originated as a celebration of the ripening of nuts in autumn, and an elaborate ground on the formula known as the Goodnight Ground. The smaller-scale fantasias (those a3 and a4) use a light-textured imitative style which owes something to Continental models, while the five and six-part fantasias employ large-scale cumulative construction and allusions to snatches of popular songs. A good example of the last type is the Fantasia a6 (No 2) which begins with a sober imitative paragraph before progressively more fragmented textures (working in a quotation from Greensleeves at one point). It even includes a complete three-strain galliard, followed by an expansive coda (for a performance on YouTube, see under 'External links' below). The single five-part fantasia, which is apparently an early work, includes a canon at the upper fourth. Masses Byrd now embarked on a programme to provide a cycle of liturgical music covering all the principal feasts of the Catholic Church calendar. The first stage in this undertaking comprised the three Ordinary of the Mass cycles (in four, three and five parts), which were published by Thomas East between 1592 and 1595. The editions are undated (dates can be established only by close bibliographic analysis), do not name the printer and consist of only one bifolium per partbook to aid concealment, reminders that the possession of heterodox books was still