On her third release, Mascott’s Kendall Jane Meade still sounds charmingly vulnerable, and still writes like she’s dotting her verse with unusually romantic British vernacular—once again confirming her gift for executing the three-minute pop song. With its timeless cross-section of pop modalities, Dreamer’s Book is a breakthrough for Ms. Meade. She builds her imminently accessible folk-pop tracks upon a foundation of languid, melancholy-dipped ruminations, then fades out on the ether of a few earthbound rockers; this album is defined by Meade’s innate sense of balance. Throughout, every mood and texture finds its complementary match, as the ice-breaking hush of the pristine “Time Waits” is melted by the gritty guitars and glistening drama of “Song from a Dream.”