posts not showing up on page

I am using a page to display names of songs, which are entered as posts. Here’s the address: https://raginggrannies.org/seattle/songs/
The most recent posts don’t show up on the page. They are in there- if I search by month they show up, but they aren’t showing up in the “master list”. I upped the setting for posts per page to 500, which didn’t do anything. Is there a maximum limit on posts per page? What can I do?