The lineup for the 20th annual Basilica Block Party is being announced this afternoon on Cities 97 – one act every 15 minutes.

Announced thus far are Alpha Rev, Delta Rae, Airborne Toxic Event, Wild Feathers, local band Black Diet and the duo of roots rocker Ben Harper and blues harmonica ace Charlie Musselwhite.

The BBP is slated for July 11-12 at the Basilica of St. Mary in Minneapolis. The previous events have raised $5.2 million for the basilica’s restoration and outreach program.

This year’s event will feature 20 acts on three stages over two days. Pre-sale tickets will go on sale Saturday for members of Cities 97 Frequent Listeners Club; the public sale begins May 3 at etix.com, the Electric Fetus and 1-800-514-3849.

Cities 97 DJs Paul Fletcher and Keri Noble should finish announcing the lineup by about 7 p.m.  Look for an update here shortly thereafter.