I want to know the answer to the following question:
What was the percentage of labels youtube had signed contracts with prior to the planned launch date?
All the background I'm provided with is that "Stating that 90% of labels had reached deals, he went on to say that "while we wish that we had [a] 100% success rate, we understand that is not likely an achievable goal and therefore it is our responsibility to our users and the industry to launch the enhanced music experience."". Is that enough to answer the question?