Mariah Carey calls for action, more new songs

■ Mariah Carey with Ms. Lauryn Hill, ‘Save the Day’: This fall, Mariah Carey will throw the vault wide open: Not only is she releasing her long-awaited memoir, “The Meaning of Mariah Carey,” on Sept. 29, but she’ll also be putting out a career-spanning rarities collection Oct. 2, featuring a trove of previously unreleased material. The first taste is “Save the Day,” a Jermaine Dupri-produced track that effectively samples Lauryn Hill’s iconic vocal from the Fugees’ 1996 cover of “Killing Me Softly.” The song’s message of sweeping uplift certainly fits the current moment, but the thumping beat and breathy vocals are a throwback to mid-’90s Mariah.

■ Phoenix, ‘Identical’: Sofia Coppola’s movies are known for their well-curated needle drops. One boon of being married to Phoenix frontman Thomas Mars, though, is that it’s probably pretty easy to commission an ’80s-inspired pop song custom-made for the mood of your latest film. “Identical,” from the soundtrack of Coppola’s forthcoming father-daughter movie, “On the Rocks” (starring Bill Murray and Rashida Jones), has a sleek surface and an appealing undercurrent of nostalgia, driven by sunset-hued synths and Mars’ sweet falsetto. You can almost picture the montage.

■ Chloe Moriondo, ‘I Want to Be With You’: Acutely observed bedroom pop about losing yourself on the path to someone else, served with a side of arena-emo triumph.

■ BTS, ‘Dynamite’: BTS’ first single wholly in English is a sprightly bit of lite disco-funk somewhere between Jamiroquai and Charlie Puth. Less musically adventurous than the songs that made the group a worldwide phenomenon, it relies on brightness, exuberance and relentless good cheer. Sadly, though, “Dynamite” includes no real rapping — always one of the group’s strong points, and a weapon that makes it among the most versatile of pop outfits.

■ Hardy, ‘Boyfriend’: Rising country star Hardy takes a detour toward nice-guy balladry with “Boyfriend,” a sharply written song about taking things to the next level. “I’m so sick of driving clear across town every night from my place to yours/I don’t wanna be your boyfriend anymore”: This is how sensitive country bros put a ring on it.