What you’re describing is almost certainly a or an unofficial release (often found on torrent sites, file-sharing forums, or bootleg blogs). The “CB” in the filename might refer to a specific ripper, group, or tracker tag.
2 × CD-R, Compilation, Unofficial Release, 320kbps MP3 / CBR Evanescence - Greatest Hits 2012 2CD 320kbps CB...
It looks like you’re trying to write a title or description for a music release labeled What you’re describing is almost certainly a or
Alternative Rock / Gothic Metal / Symphonic Rock or tracker tag. 2 × CD-R