Because this is a generic name used for millions of private files sent through the app, it does not refer to a specific, unique "piece" of music, art, or media available in a public database. The "WA" stands for WhatsApp, and "0018" indicates it was the 18th video file handled by the app on that specific date.
To help identify the "piece" within that video, could you describe: in the video? VID-20190603-WA0018
If you can provide a few details about the content, I can help you find the original source or the name of the work! Because this is a generic name used for