There are several ways to understand the songs sung on the webpage: 1. Use the browser's built-in search function to search for the name of the song or singer on the webpage to find the relevant song information. 2. Use a browser extension or plug-in such as the "Web Extension" for Chromeor the "Lyric Explorer" for FireFox to find song information more easily. 3. Use third-party browser plug-ins or applications, such as the "Google Lyric Search" plug-in for the Google Chrome-based browser or the "Lyric Search" application for the Android and iPhone to find more comprehensive song information. No matter which method you used, you needed to first download and install the corresponding application or plug-in, and then open the web page that you needed to find the song in the browser. If the webpage supports the lyrics display function, you can view the lyrics directly in the browser to better understand the song content.