Cantata I believe.
Cantata I believe.
The chorale is primarily associated with Protestant church music, specifically in the Lutheran tradition. It is a type of hymn tune typically sung by a congregation in four-part harmony.
A composition for an organ that incorporates a hymn tune is known as a chorale prelude.
martin Luther
Congregation
The chorale tune is typically placed in the soprano voice in a simple four-part harmonization. This allows the melody to be heard clearly and be supported by the other voices.
soprano
Typically, Bach's cantatas are each based on a chorale tune. In some of them the tune reappears in different guises in each movement, sometimes in a fugue, sometimes as a ground-bass, sometimes as a simple variation. In others it only reappears at the end of the cantata, but the melodies of the other movements are based in some way, either melodically or rhythmically, on the chorale-tune.
The hymn that has this tune is called, "Come, Christians, Join to Sing." The lyrics were written by Scottish minister Christian Henry Bateman in 1843.
It is not clear when the hymn tune "Adeste Fidles" was written. The thought it is that it may have been written in the 13th century by John Francis Wade.
Could be anything depending where in the world you worship but in the Methodist Hymn and Tune Book: official hymn book of the Methodist Church‎, Pleasant are Thy Courts Above is hymn number 230
The hymn "Abide With Me", to the tune "Eventide".