"I've never done this without Paramore," Hayley Williams announces during her Tiny Desk (home) concert. For the first time in months, she's joined by a band, including friends and Tiny Desk alumnae Julien Baker and Becca Mancari. And from the moment the camera pans out of a literal tiny desk diorama, a jolt of energy leaps from Williams. Petals for Armor is a soul-cleansing exhale from years of holding her breath. Originally released in a series of EPs, her solo debut sings through heartache in a tangle of triumph and hard-earned wisdom. It's a pop album that knows sadness can simmer, but also shout over an ever-shifting sonic palette. During the pandemic and protests, Williams has played these songs from her couch with muted restraint, and self-serenaded with acoustic covers — sad songs really can be sympathetic companions during dark days.