If you are interested in Yiddish / Israeli / Ladino / Cantorial / Jewish Theatre and similar music and culture, here's a site with about 5000 historical and modern recordings, including some old 78 rpms (if you don't know what those are, don't bother!).

The list goes back to at least 1907 - possibly earlier.

It's a real treasure, sorted by artist, label, title, genre, etc

Click HERE to view the website.