John Ward's Mourning Song was one of a number of laments composed for the funeral in 1612 of the young Prince of Wales, son of King James I. It was performed by the men and children of the King's chapel accompanied by various instruments and was published in 1613. The title page suggests that the piece is "...apt both for Viols and Voyces..."

Henry Frederick Stuart, Prince of Wales (19 February 1594 – 6 November 1612) was the elder son of King James I & VI and Anne of Denmark. His name derives from his grandfathers: Henry Stuart, Lord Darnley and Frederick II of Denmark. Prince Henry was widely seen as a bright and promising heir to his father's thrones. However, at the age of 18, he predeceased his father when he died of typhoid fever. The heirship to the English and Scottish thrones passed to his younger brother Charles.

Prince Henry's death was widely regarded as a tragedy for the nation. According to Charles Carlton, "Few heirs to the English throne have been as widely and deeply mourned as Prince Henry." His body lay in state at St. James's Palace for four weeks. On 7 December, over a thousand people walked in the mile-long cortege to Westminster Abbey to hear the two-hour sermon delivered by the Archbishop of Canterbury. As Henry's body was lowered into the ground, his chief servants broke their staves of office at the grave.

The lament transcribes well for double bass sextet and the slow chordal writing will suit the low tessitura of the ensemble. A wealth of colours and timbres can be created by the subtle use of vibrato and non-vibrato and entries should be carefully shaped to draw attention from player to player.

The edition includes a score and parts. Bass 1/2, 3/4 and 5/6 are printed together to help with ensemble and rehearsal, and two copies of each part is included.

English composer, John Ward (1571–1638) was a contemporary of John Dowland. Born in Canterbury, he was a chorister at Canterbury Cathedral and went to London where he served Sir Henry Fanshawe both as an attorney in the Exchequer and as a musician. Ward married and had three children, moved to Essex by 1636, and died at Ilford Magna in 1638.

John Ward composed madrigals, works for viol consort, services, and anthems. His madrigals are remarkable for their fine texts, broad melodic lines and originality.