Ave Verum Corpus (4-12 Pos)  (Ave Verum Corpus Natum de Maria Virgine;  Vere passum immolatum In cruce pro homine;  Cuius latus perforatum, Unda flexit sanguine:  Esto, nobis praegustatum In mortis examine.  O dulcis, O pie O jesu Fili Mariae,  Miserere mei. Amen  Hail, true body, born of the Virgin Mary;  Thou who truly hangs on the cross for mankind;  Thou whose side was riven, Whence flowed blood:  Mays’t thou, dear Lord Sustain me by your death.  O tender, O loving, Jesu Son of Mary,  Have mercy upon me. Amen    This motet was first published in Byrd’s magnificent set of sacred music, Gradualia in 1605. The original text is a Sequence Hymn for Corpus Christi by Pope Innocent VI. This beautiful setting has the pure simplicity of a prayer, some wonderful souring melodic lines laced with some characteristically pungent harmonies.    This arrangement of the 4-part motet is for a choir of trombones and was made for trombone choir of Trinity College of Music, London.    Performance notes:    This arrangement can be performed by between 4 and 12 trombones. While it is essentially a 4-part piece shared between 12 voices the cued parts in voices 1-4 can be played if fewer instruments are available.    Aim for a smooth legato throughout. Make sure that the balance between the 4 voices is even. Use the suggested dynamics to give shape the music but do not over-exaggerate the loud dynamics or the up and down shapes in the second section.)