Words Fail Me 7.

This is the only all-Parsons (c. 1530-1572) disc around, and it touches several bases. (He drowned mysteriously, after which the scores got scant attention.)

From Other Worlds: Bancquart, Hunt, Schoenberg’s Handwriting, the Vihuela

A trusted friend hands you a strangely colored gemstone. It seems to glow from within — a thing from another solar system.