Here is a 1-paragraph summary of the provided text: Spotify has made its API available, allowing for measurable audio features to be included in each track's database. These features include acousticness, danceability, energy, instrumentalness, liveness, loudness, speechiness, and valence. Using these elements, it is possible to create a Zap that builds the perfect work playlist by automatically adding songs from specific playlists based on predefined conditions. The Zap can be customized to filter out certain qualities of music, such as "liveness" or "speechiness", and add songs with high-energy, danceable, happy tracks. By setting up this Zap, users can create a personalized playlist that suits their preferences and boosts productivity during work hours.