Alex Aster books in order
4 books in the catalogue, about 33 hours of reading in all; the shortest takes 8 hours and the longest 9 hours.
2 series in the catalogue.
The Lightlark Saga
6 books
Lightlark 7.9 h Nightbane 7.9 h Skyshade length not known
Grim and Oro length not known
Crowntide 7.6 h Lightlark Holiday Novella length not known
Starside
2 books Starside 9.4 h
Stormside length not known