Because the three industry sectors have been unable or unwilling to closely align their interests, marketers can expect to hear widely divergent viewpoints regarding the potential for mobile music.

But the one thing the industries agree on is that they all need mobile music to grow, and as quickly as possible.

eMarketer estimates that music labels earned $1 billion from global mobile music in 2006, and that figure will rise to $7.3 billion in 2011.

Worldwide Mobile Music Revenues, 2006-2011 (billions)

Key questions the "Mobile Music" report answers:

- What is the potential size of the mobile music opportunity?
- Which regions are growing fastest and why?
- How can marketers participate in mobile music?
- What are some potential wild cards for marketers to understand?
- And many others...