The phrase represents a musical association for a choir. Particularly, “SATB” signifies that the association is written for 4 voice elements: Soprano, Alto, Tenor, and Bass. “Martin” seemingly refers back to the composer or arranger of the piece. The preliminary phrases, “above the clear blue sky,” strongly counsel the title of the composition.
Such preparations allow choral teams to carry out items with richer harmonies and textures than can be potential with unison or two-part singing. The SATB format is a normal configuration for a lot of choral works, providing a steadiness of vocal ranges and permitting for a wide range of musical results. The title itself could evoke imagery or feelings which can be then conveyed by means of the musical composition, enriching the listening expertise.