One of the crucial aspects of the MEAD standard is that it allows a record company to communicate an “impact date” (i.e. the date when a track started receiving a significant amount of airplay) to a DSP. Impact dates are especially useful for helping music discovery on smart speakers and other devices with no screen.
The impact date is communicated in the Usage composite as shown below:
<ResourceInformation> <ResourceSummary> <ResourceId> <ISRC>X56700002721</ISRC> </ResourceId> </ResourceSummary> <Usage> <MetadataSourceReference>U1</MetadataSourceReference> <UsageDate>1990-10-01</UsageDate> <Description>ImpactDate</Description> </Usage> </ResourceInformation>
However, given the importance of the impact date, the impact date will be communicated in a separate
ImpactDate composite, in the next version of the MEAD standard.