Question: It was this day in Rock History in 2009, these guys held a free concert in Hawaii to placate angry fans who brought a legal case against them.  Who was it?

Answer: It was Aerosmith! Fans filed a class action case, which claimed the band had cancelled a sold-out show in Maui two years ago, leaving hundreds of fans out of pocket in favor of a bigger gig in Chicago. Lawyers for the would-be concert-goers said Aerosmith had now agreed to put on a new show, and would pay all expenses. Everyone who bought a ticket to the original concert would receive a free ticket.