Finding a single, legal "all-in-one" ZIP file for copyrighted hits is difficult due to licensing, but several platforms allow you to download entire 90s collections: 10 Best Sites for Free Music Downloads | HP® Tech Takes
"Believe" (Cher), "...Baby One More Time" (Britney Spears), "Wannabe" (Spice Girls), and "Vogue" (Madonna). 90s Hit Songs List Mp3 Download Zip File High Quality