If you can't find a "Download All" or "Zip" button on the website, you can use third-party downloader tools to download the top 100 English songs as a zip file. Here are a few popular tools:
...and the list goes on.
The Internet Archive hosts thousands of live concerts and old 78rpm records that are out of copyright. You can download "Top 100" collections from the 1920s-1940s legally as zip files. Top 100 English Songs Free Download Mp3 Zip File