This fourth book of organ solos comprises a mix of original works by myself and some arrangements of famous works by other composers.

Whereas the first three books contain technically difficult organ works, the contents of this book are more accessible to people whom are learning the instrument.

The arrangement of Mozart's Ave Verum Corpus departs from the vocal lines in a couple of places, and I have inserted a modern complex chord of my own invention in the coda which amplifies the tension of the original.