Trilogy:tril·o·gy /ˈtriləjē/
a group of three related novels, plays, films, operas, or albums. (in ancient Greece) A series of three tragedies performed one after the other.

Larry Norman, who was very interested in literature, both studying it and creating it, produced three of his albums as parts of a trilogy; Only Visiting this Planet, So Long Ago the Garden, and In Another Land. Larry’s Trilogy was a masterful work, so profound that it inspired a doctoral dissertation, Rock for the Ages, A text in Context, Rhetorical Analysis of Larry Norman’s Trilogy.

During the Fallen Angel feeding frenzy the normally astute writer, Chris Willlman, Rock Critic from Entertainment Weekly, uttered the following.

For me, the first time I think I ever had questions about, “What’s he doing?,” or whatever, was when In Another Land came out, and it was like, “part 3 of a trilogy.” Okay, there’s this kind of self-mythologizing starting to happen, where it’s not okay to just put out three really great albums that are just great albums; they have to be, you know, “The Trilogy,” like Tolkien or C.S. Lewis, or something.

You know what, Mr. Willman? Larry Norman, in his genre, is analogous to J.R.R. Tolkien and C.S. Lewis in theirs.