With the the new genres filter, Twitter #Music looks to offer a more targeted experience for its users, with "tons" of options to choose from, including "Superstars, Popular, Emerging, Unearthed and Hunted charts," among others.
Version 1.1 also includes in-app authentication with the Rdio Internet music service. Previously, Twitter #Music would force users to leave the app and sign in to Rdio via Safari.
Finally, the latest build includes a fix for instances where a track would be unavailable for playback, as well as a number of bug resolutions.
Twitter #Music for iOS is available for free as an 18.4MB download from the App Store.