O Virgo Virginum by Gabriel Jackson for solo Tenor and SSATB unaccompanied.Following on from the publication of Jackson's settings of the seven 'O' antiphons under the title Seven Advent Antiphons O Virgo virginum is a setting of the Latin text recognised as the eighth 'O' antiphon and performed as such in many Christian traditions. Jackson's imaginative setting features a melismatic line for tenor soloist and aleatoric writing.