Epithalamium

Epithalamium (Gk. thalamos, chamber), an ode composed and sung outside a bridal chamber upon a wedding-night by young men and maidens, the companions of the newly-wedded pair. Sappho, Pindar, Theocritus, Catullus, and Spenser have all made notable compositions in this kind of poetry. Shakespeare often makes use of the word, and Burnet speaks of one of the Psalms as an epithalamium to Christ and His Church.