Tickets for this year’s BravoBravo! fundraiser, supporting Michigan Opera Theatre and the Detroit Opera House, will go on sale tomorrow, April 1, 2010. In its 11th year, BravoBravo!, presented by Bank of America, will take place on Friday, June 4, 2010 from 7:30 p.m. to 12:30 a.m. at the Detroit Opera House, 1526 Broadway, in …