Widespread Panic and the Allman Brothers Band have added three additional dates to their late summer/early fall co-bill tour. The two groups will now perform together 19 times from August 21 through October 17. The first added date appears during the first leg, on August 22 at the CMAC Performing Arts Center in Canandaigua, NY. Two additional shows are set for Birmingham, AL’s BJCC Arena on October 9 and 10. Pre-sales begin this Wednesday at 10AM with the public on-sales set for Friday (Canandaigua) and Saturday (Birmingham).