Publisher Desc.  This simple carol-hymn is among the most popular of all carols sung in English.  A 1996 Gallup poll taken in Great Britain ranked it second.  The lyrics, once attributed to Martin Luther (later proven to be a fallacy), are set to two different tunes, this one by James Murray written in 1887 or 1885 (there is a question as to which is correct) and another by William Kirkpatrick in 1895.  Donna Hardin has set the Murray tune in three parts for groups with changing voices (SCB) or changed voices (SAB).  All three stanzas (verses of lyrics) are set to be sung by adolescent baritones (second phase changing voices or males whose voices have completed the change, each singing Part III.  However, a footnote indicates that for variety the director may choose to use a male soloist   (adult or adolescent baritone -- the part is not suitable for cambiatas) or a female soloist  (sung 8va up).