The metadata defined for each Release includes one or more Release identifiers (ICPN, UPC, EAN, GRid, ISRC), artist, title, label, genre, parental warning and P&C credits. A Release does NOT contain any information regarding the business terms associated with its commercial exploitation and usage.
The exact fields to to be used in a specific business case (e.g. describing a Ringtone release or describing or a Classical Album) is defined in the relevant Release Profile standard. More details on profiling can be found here.