Hooray Brooklyn The summertime free music options keep on rolling out. Not to be outdone by the recent Summerstage announcement or River to River's Wire kick-off, Brooklyn's answer to free in-park music stepped up this week to show what they've got. The Celebrate Brooklyn series runs all summer long at the Prospect Park Band Shell, and will kick off with a free Isaac Hayes show on June 12th. From there, they'll host a number of......