The first of these would be to provide up to date and accurate information about artists, and their recordings. Reflecting the contractual right to sell the recordings, depending on the consumer access to digital media as a stream or download.
When it comes to physical media whether there was stock available, and if the recording was in print. If there was no physical stock, then would or could MRA manufacture (contract out the manufacturing) on demand the physical CD, vinyl and so on.
To create such an offering means that the data and algorithms need to be exposed between systems either within MRA, between MRA and its suppliers and partners, and even to 3rd party service providers who could ultimately build new capabilities ...