Plex API, how to get all audio tracks?

Hi. Not sure where to post this.

I’m trying to use the API to get all th tracks from my music Library. When I try this URL, it returns all the artists in the Library. How can I get all the tracks?

192.168.1.xxx:32400/library/sections/15/all?X-Plex-Token=xxxxxxxxxxxxxxxxx

Library 15 is my music library, of course.

Try adding the type to the parameters (it works here):
192.168.1.xxx:32400/library/sections/15/all?type=10?X-Plex-Token=xxxxxxxxxxxxxxxxx