James LaBrie (formally MullMuzzler or James LaBrie's MullMuzzler) is the name of the progressive metal solo side project by James LaBrie, the lead singer of Dream Theater, before recording under his own name in 2005. The record company wouldn't allow LaBrie to use his own name, so he created the name of MullMuzzler. LaBrie coined the word MullMuzzler and defined it as: to gag or silence an individual's thought before it can be expressed in any manner.