It's a really beautiful little performance here - with full orchestra and choir. This is the English language rendition of Te Deum - God We Praise you translated from Latin, performed by this group in Singapore at the Church of Our Lady Star of the Sea for Fr Edward Lim's 25th Sacerdotal Jubilee - I think that means he had been a priest for 25 years at this point.

Courtesy Whispers, Te Deum is described by Wiki:Though its authorship is traditionally ascribed to Saints Ambrose and Augustine, on the occasion of the latter's baptism by the former in AD 387, contemporary scholars doubt this attribution, many assigning it to Nicetas, bishop of Remesiana in the late 4th to early 5th centuries. Some scholars have suggested that the hymn is the merger of two (or more) earlier hymns: one to God the Father and another to God the Son. Under this schema, the second begins with the phrase Tu rex gloriae, Christe. The petitions at the end of the hymn (beginning Salvum fac populum tuum) are a selection of verses from the book of Psalms, appended subsequently to the original hymn.

The hymn follows the outline of the Apostles' Creed, mixing a poetic vision of the heavenly liturgy with its declaration of faith. Naming God immediately, the hymn proceeds to name all those who praise and venerate God, from the hierarchy of heavenly creatures to those Christian faithful already in heaven to the Church spread throughout the world. The hymn then returns to its creedal formula, naming Christ and recalling his birth, suffering, and glorification. At this point the hymn turns to the subjects declaiming the praise, both the Church in general and the singer in particular, asking for mercy on past sins, protection from future sin, and the hoped-for reunification with the elect.