The 2018 MBOS Rulebook is now available!

The 2018 MBOS Rule book is now available.  Please take a moment to look at updates, including updated classifications.


MBOS 2017 is HERE!

With an emphasis on music education, the Marching Band Open Series provides the region with nationally recognized and prominent adjudicators along with superior performance venues for each event.  Check out the MBOS 2017 Schedule for Event dates and locations.
Registration for the 2017 MBOS Season opens at 12 noon PST on May 24th!

2017 MBOS is here!

Check out the MBOS Schedules page for detailed information on every event in 2017!  MBOS registration opens May 24th at 12 noon PST! Register early for the best performance slots at all MBOS events.
The Marching Band Open Series is the most progressive marching band circuit on the West Coast!  Nationally acclaimed adjudicators, educationally sound judging criteria where MUSIC is first, and quality venues is what MBOS is all about! Check out the MBOS experience and see first hand what you have been missing!

Happy Holidays!

Wishing you unlimited joy and fun this Holiday Season!
Hope these holidays rejuvenate you so that you return full of energy and enthusiasm.

Happy Holidays from all of us at WGASC and MBOS!

That’s a wrap!

The 2016 MBOS Season came to a close on Saturday night in front of a packed stadium!  Congratulations to the 2016 MBOS Champion and Gold Medalist Foothill HS, Silver Medalist Arbor View HS, and Bronze Medalist Green Valley HS, along with the over 5,000 performers that participated in MBOS events this year.  See you in 2017!

2016 MBOS Championships!

Who will be crowned the next MBOS Champion?  Join us this weekend for all the action as the 2016 MBOS Season comes to a close at Sierra Vista HS!  Not able to be with us in person?  Check out the Marching Band Open Series – MBOS Facebook page for our exclusive MBOS “On the Track” and MBOS “On the Field” segments for a LIVE look at the action and interviews with performers and staff members throughout the day!  Don’t forget to get the official WGASC/MBOS NOW! app for the Winter Guard Association of Southern California and the Marching Band Open Series. Get up to the minute News, Scores, and Event information for all WGASC and MBOS events for ONLY 99¢!  Search “WGASC” in your Apple App Store or Google Play Store for Android.  Check it out MBOS NOW! App Info