I was glad

I was glad (Latin incipit, Laetatus sum) is an introit commonly used in Anglicanism, and also used as an anthem traditionally sung at the Coronation of the British monarch. Its most famous setting was written in 1902 by Sir Hubert Parry, which sets only verses 1–3,6,7.

The text of the anthem consists of verses from Psalm 122, from the psalter found in the 1662 Book of Common Prayer:

Most of the content of the psalm is a prayer for the peace and prosperity of Jerusalem, and its use in the coronation service clearly draws a parallel between Jerusalem and the United Kingdom, as William Blake had in his poem Jerusalem (which Parry set to music later, in 1916).

The anthem Laetatus sum has been sung at the entrance of the monarch at every British coronation since that of King Charles I. Settings for earlier coronations were composed by Henry Purcell and William Boyce, among others. Thomas Attwood's setting was written for the coronation of King George IV in 1831. Parry's version was composed for the coronation of King Edward VII in 1902, and revised in 1911 for that of King George V, when the familiar introduction was added. This setting employs antiphonal choir effects and brass fanfares.

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