Uses a major kay to create a joyful mood - it's mostly in A major, it goes to E major (dominant) twice, and B major (dominant of the dominant) once.
Only uses diatonic chords throughout, using mainly root-position and first inversion triads.
Dissonances created by suspensions.
Most cadences are perfect.
Finishes with a plagal cadence.
There are four main musical ideas/motifs:
'And The Glory, the glory of the lord' - mostly syllabic - each syllable has it's own note.
'Shall be revealed' - a descending sequence. Revealed is melismatic (lots of notes per syllable).
'And all flesh shall see it together' - the same bit of tune repeated three times.
'For the mouth of the lord' - sung by the tenors and bassas in unison when it's first heard. Mostly on the same note (pedal note) and long notes to make it sound serious and important.
Texture and instruments
The vocal parts are sung by the Soprano, alto, tenor and bass
A variety of textures - imitative, monophonic(found at the beginning), Homophonic(where all the choir are singing the same idea together), polyphonic.
Most notable use of polyphony is at the end on 'for the mouth of the lord'.
The instruments usually double the singers (ie, play what he singers are singing)
Rhythm and Tempo
Marked allegro (fast). It's in 3/4 but in some places it feels like it's in 2/4 - this is called a hemiola.
Contrasts are created through the use of dotted rhythms, even quavers and long notes.