The volume of data generated by the online use of music continues to grow, and the importance of data as a driver of the digital economy continues to be confirmed. Will data determine the future of the rights sector and its capacity to absorb the growth in digital uses? How to improve data and identifiers' quality? What progress has been made in the data sector? Why are we still waiting for a universal database? Does the “cloud” bring progress? A group of experts will attempt to unravel the major challenges of music data in the 21st century.