Robert John "R J" Stewart (born 1949) is a Scottish-born composer, author, and teacher.
[1] He has written over 40 books on occultism, Ceremonial magic and Celtic mythology.
From 1980 to 1988, Stewart wrote two books about Merlin, translating and exploring medieval texts on the topic (now published in one volume as Merlin: the Prophetic Vision and Mystic Life, by Penguin Arkana).
[citation needed] From 1988 to the present, R J Stewart has taught workshops and classes on Celtic and Classical mythological traditions, music and consciousness.
Although this can make the instrument difficult to play at speed, complex chord progressions can be easily interwoven around a basic melody.