Spotify welcomes new apps from Warner, Def Jam, Matador, more

So, now that Rdio's got itself a fancy redesign, it's time for Spotify to fire back, right? The Swedish streaming service announced a new round of third-party apps, including selections from some big industry names, like Warner, Def Jam, Domino and Matador Records. The list also includes Classify, an app designed to help users discover classical music on the service, The Complete Collection, which offers up supplementary images, lyrics and liner notes and Fitr, which lets you build playlists based on Facebook friends. Also new is Hot or Not, which offers a song-based take on the internet voting site and [PIAS], which provides some curated playlists. In all, the site is rolling out a dozen new apps.