With all the secret shows, special guests and surprise announcements that come with each year's South by Southwest festival, it must be tough for performers and promoters to reveal something worth saying "wow" about.  But Yahoo! may have done just that, announcing its massive On the Road tour, which will include 32 acts, including Imagine Dragons, fun., The Lumineers and more, according to SPIN.com.

Obviously, not every artist will be hitting the stage for each show on the 21-city tour, which will spread across the U.S. and Europe.  The full list of dates hasn't been released yet, but things will get underway May 3 in New York City, wrapping up with the three-day Wireless Festival in London, July 12-14, according to SPIN.

Tickets are on sale now, and more guests will be announced. Here are the Yahoo! On the Road tour dates:

5/3 -- New York, NY
5/4 -- Philadelphia, PA
5/5 -- Washington, D.C.
5/7 -- Columbus, OH
5/9 -- Detroit, MI
5/11 -- Chicago, IL
5/13 -- Madison, WI
5/15 -- St. Louis, MO
5/18 -- Houston, TX
5/20 -- Dallas, Ft. Worth, TX
5/23 -- Denver, CO
5/26 -- Seattle, WA
5/28 -- Boise, ID
5/31 -- San Francisco, CA
6/11 -- Berlin, Germany
6/13 -- Munich, Germany
6/18-19 -- Cannes, France
6/21 -- Milan, Italy
6/29 -- Madrid, Spain
6/3 -- Paris, France
6/9-6/14 - London, U.K.

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