5 books in series

Crystal singers universe

Crystal singers universe is a 6-book series with 5 released primary works first released in 1982 with contributions by Anne McCaffrey.

The Coelura
Crystal Singer
Killashandra
Crystal Line
Nerilka's Story & The Coelura
Nerilka's Story The Coelura: (Dragonriders of Pern: 8): two gripping tales in the world-famous Chronicles of Pern from one of the most influential fantasy and SF novelists of her generation