"Deep Piece" was also the name of an English electronic music duo active in the 1990s, known for progressive house and remixes.
If you found this specific text on a third-party file-sharing site or forum: Datei herunterladen _OST.rar
The phrase (German for "Download file _OST.rar") appears to be a specific request or link title related to downloading the Original Soundtrack (OST) for a project titled "Deep Piece." "Deep Piece" was also the name of an