Look for community-driven sites like Archive.org, which host public domain music and historical recordings.
: Look for blogs with active comment sections where other users confirm the file's contents. to start your collection manually? 1000 Old Songs Zip File Download
The search for a "1000 old songs zip file download" is a classic trap. The files you find will almost certainly be either illegal, infected with malware, low-quality, or all three. Look for community-driven sites like Archive