Right from the Hymnbook : How to Play Hymns & Gospel Songs

Many church pianists do an excellent job playing hymn arrangements. However, when accompanying congregational singing they are limited to the notes shown in the hymnal. The author teaches how to enrich those notes into a full, rich sound. These are learnable skills, whether one has a tutor or not. There are also sections on how to modulate from one key to another and how to transpose songs to fit the voice range of the singers.