Moerane wrote 16 works that are a direct product of his Christian upbringing and lifelong faith. Alongside his knowledge of and respect for traditional cultural values, he wholeheartedly embraced the culture and theology of the Protestant church, but because of his fairly advanced education in Western classical music, his style of writing goes far beyond the rather simple style of the hymn. His considerable polyphonic skill and a creative use of voices and harmony reveal themselves in a number of works that show his deep spirituality. Four different categories of spiritual songs are distinguished in this chapter, not in order to be prescriptive but simply by way of introduction to his music. They are distinguished not only by their texts, but also by their musical style, and are organised here into four categories: hymns, anthems, sacred songs and spirituals.

The three hymns are simple four-part harmonisations of existing or newly composed congregational melodies: Ea Hlolang (The Triumphant One), Jehova Oa Busa (Jehovah Reigns) and Ntate Ea Mohau (Lord of Mercy). The three anthems are more challenging in their vocal part-writing: Leseli La Hao (Your Light), Vumani KuYehova (Sing To Jehovah) and Ngokuba Sizalelwe Umtwana (For Unto Us a Child is Born). The two sacred songs, Ruri! (Truly!) for SATB (soprano, alto, tenor, bass) and Tsatsi La Pallo (Judgement Day) for SAA can be sung in any type of venue and on any kind of occasion, including a church service. The eight spirituals are in English and are written for varied voices. One of them is an arrangement of a sea shanty, Shenandoah, for SSATTBB, while the rest are arrangements of African-American tunes: By An’ By for SATB, Go Tell It On The Mountains (Christmas) for SATB soloists and SATB choir, I Got A Home In-a Dat Rock for SATB, I Stood On De Ribber for Soprano solo and SATB choir, It's Me, O Lord for SATB, Nobody Knows The Trouble I’ve Seen for SAA, and Witness for SATB.

Hymns

Brought up in the practice and faith of the Paris Evangelical Missionary Society (PEMS) church, which later became the Lesotho Evangelical Church (LEC), Moerane was extremely familiar with the PEMS hymnal Lifela tsa Sione. This was first published in Morija in 1844, 11 years after the French–Swiss missionaries established the Protestant mission in Basutoland, and it continues in print to this day.