The press release below pretty much explains everything! Sorry to all US fans this affects, expect dates to be rescheduled ASAP!
"Zebrahead FORCED TO POSTPONE US TOUR - DOCTORS ORDERS!
Hailing from Orange County , CA. zebrahead -- Ali Tabatabaee (vocals), Greg Bergdorf (guitar), Matty Lewis (vocals/guitar), Ben Osmundson (bass) and Ed Udhus (drums) – are just back from a grueling tour of Europe and Japan and much to the bands disappointment they are forced to postpone the US tour dates.
Fresh off the plane from Japan last Thursday the band headed straight for location to shoot the video for the track "The Juggernauts”…during the production frontman Matty Lewis started to see some changes in his voice, the band immediately called in a physician and the outcome was to postpone the August/September US tour dates… doctors orders. Matty has been told he must relax his vocals until further notice.
Zebrahead plans to reschedule these dates ASAP."
On a side note, this also confirms that "The Juggernaughts" will be another single taken from "Phoenix" and other early reports indicate "Hell Yeah!" has also had a video shot for it.