By Katya Gubarev, Contributing Reporter
RIO DE JANEIRO, BRAZIL - With over 90 percent of the line-up confirmed, Rock in Rio will open the official ticket sales in early May 2011, instead of Jul,y due to the public's demand. The entry for each day will cost R$190 and half-price will be set at R$95. If the pre-sale of the Rock in Rio card at the end of 2010 is any indication, the tickets will be . . .