NPR Music's Daoud Tyler-Ameen and Lars Gotrich provide a guide the most exciting new releases out today. This week, the selections include some recordings that are new and some that are as much as a half-century old, verging on mythological. The producer Jamie xx began his career as a teenager making beats for the moody electronic band The xx.

His solo recordings, including the new album In Waves , have tapped into a higher energy and a wider range of sounds. The saxophonist Nubya Garcia's new album, Odyssey, is as adventurous as the title sounds. And the Kansas City-based Blackstarkids swing between electronic pop, hip-hop and indie rock sounds that feel like they stepped off a time machine directly from the 1990s.

Plus: A pair of releases that package previously unreleased material by Bob Dylan and Galaxie 500 sparks a conversation about bootlegs, alternate versions and other rare and unreleased favorites. Featured albums: • Jamie xx, In Waves • Nubya Garcia, Odyssey • BLACKSTARKIDS , Saturn Dayz • Bob Dylan and The Band, The 1974 Live Recordings • Galaxie 500, Uncollected Noise New York '88​-​'​90 Other notable albums out Sept. 20: • The Alchemist, The Genuine Articulate • Alien Nosejob, Turns the Colour of Bad S*** • Trey Anastasio, Atriums • Kassi Ashton, Made from the Dirt • The Black Dog, Seclusion EP • Blossoms, Gary • Axel Boman, Space Drag • Blu & Exile, Love (the) Ominous World • Bright Eyes, Five Dice, All Threes • Manu Chao, Vi.