From Boston Calling’s undercard, 15 artists who could make headlines

This year’s roster below the top line is packed with excellent acts from all over the musical spectrum. 6:25 p.m.

They’ve been here before

This year’s returnees to Boston Calling, including an artist who appeared at the very first one. 6:09 p.m.

When she’s not singing, Imogen Heap is a hands-on innovator

Ahead of three Boston dates, Heap discusses two groundbreaking projects: her social network, and gloves that pull sound out of thin air. 5:08 p.m.

Festival booker Trevor Solomon has found his calling

As talent buyer, it’s his job to convince artists that they should be nowhere else but in Boston next spring. 4:44 p.m.

Artists as fans: the acts they want to see

Ten performers tell the Globe whose sets they’re most excited about. 4:43 p.m.

New at Boston Calling this year: Boston Ballet here, a dance party there

Boston Calling’s third year at the Allston site brings some attractions and amenities. 4:43 p.m.

Boston Calling 2019

Denzel Curry has fought to be on a big stage

The hip-hop star shares his thoughts on “RICKY,” Miami festivalgoers, and his bond with Billie Eilish. 4:42 p.m.