A fine collection of popular songs of the Lands of Night and their variations. Abraxas, a Hardfoot, compiled them in his travels from around the lands, a labor of love for which he was hounded and mocked by many of his own religious brothers, who felt he should spend more time on his work on religious paradoxes. The resulting volumes are classics and the most well-beloved thing Abraxas ever wrote.
The work on religious paradoxes is significantly less popular. Even among people who like that sort of thing.