Spotify is launching a new library of playlists designed to help match the music at a party with the desired mood.<br />Spotify Party brings "professionally mixed" playlists into the fray, aimed at helping hosts select the right music for the occasion.<br />These include "Reggaeton Riddims" and "Electro Blowout."<br />There's also a little "mood tuner" that lets you slide to a different ambience, while "Play Queue" lets you add or remove specific songs from the existing mix.<br />The new playlists feature properly beat-matched tunes, which blends songs together and should offer a better alternative to the existing cross-fade functionality within Spotify.