Live Nation Urban's fourth annual Summer Block Party happens this year across four days in three cities: two days in its original location of Chicago, one in Houston (which it expanded into last year), and for the first time, one in Philly. The lineups vary by date, with a few repeats.

Philly (June 30 at the Mann Center) has Jill Scott (part of her recently-announced tour), Boyz II Men, DJ Jazzy Jeff and special guests.

Houston (July 7 at Cynthia Woods Pavilion) has Miguel (who just played Coachella), Fantasia (who's also playing Maxwell's benefit concert in NYC), Ne-Yo and Tank.

Chicago night one (July 14 at Huntington Bank Pavilion) has Keith Sweat, Ja Rule & Ashanti, Daley, Ne-Yo and Tank.

Chicago night two (July 15 at Huntington Bank Pavilion) has Babyface, Ludacris, Brandy, Kevin Ross, and Boyz II Men.

Tickets for all four go on sale Friday (4/20) at 10 AM local.