Hi there folks! Be sure to register your music in content ID platforms like Adrev / Identiffy. Recently I came across my track to which vocals were added. This track was NOT registered by me in the YT content id. What was my surprise when I found in the description that the person registered it as his own.
Most of my portfolio is registered in Adrev/Identify. There are practically no problems with customers because of this. Buyers are used to it and know what to do.