Today may not be a very good indicator, but I swear warmer weather is around the corner. One reason I can say this with at least a shred of confidence is that the lineup for Millennium Park’s Downtown Sound series was announced last night. Now in its third edition, the series is a collaborative effort between the Chicago Department of Cultural Affairs and Events and the Chicago Office of Tourism and Culture, with cocurator medals going to Michael Orlove, Jack McLarnan, and Mike Reed. Beginning May 23, you can look forward to lugging your picnic blanket and bottle of Two-Buck Chuck down to Pritzker Pavilion every Monday and soaking up that sound system. All concerts begin at 6:30 PM and are free. Check out the full lineup: