The Dreman girl Sarjenka was especially fond of the singing stone. After her planet was saved and her memory of the encounter with the crew of the USS Enterprise-D was erased, Data gave an Elanin singer stone as a present to Sarjenka. (TNG: "Pen Pals" ) The singer stone was loosely adapted from the Star Trek novel The Tears of the Singers. This book and the episode were written by Melinda Snodgrass. (Star Trek Encyclopedia (4th ed., vol. 1, p. 231)