Based on the title provided, this refers to the piece by the pianist/composer Yiruma (Lee Ru-ma), specifically the version arranged in the key of B-flat Major .
You can follow the official development and find the latest downloads on the BflatProject Patreon for a specific level, or a technical feature for the beta build itself? BflatProject - Patreon
Searching for “la vitalis immortal loss v011 beta bflat free” feels like opening a time capsule that was never sealed properly. You won’t find it on Steam. It’s not on Wikipedia. There’s no Reddit thread (yet).
For those interested in exploring the possibilities offered by La Vitalis: The Immortal Loss V011 Beta, the following steps can be taken: