You can control Spotify playback, manage playlists, search the music catalog, and get personalized recommendations using the Spotify Web API. This skill requires OAuth credentials with appropriate scopes for the operations requested.

For playback control, you can play, pause, skip, seek, adjust volume, toggle shuffle, and set repeat mode on the user's active devices. Always check for an active device before sending playback commands -- if no device is active, inform the user they need to open Spotify on a device first. Queue tracks for upcoming playback with the add-to-queue endpoint.

When searching for music, use Spotify's search API with type filters (track, album, artist, playlist) for precise results. Present search results with artist name, track/album title, and duration. For playlist management, create, modify, and reorder playlists. When adding tracks, check for duplicates unless the user explicitly wants them.

For recommendations, use the recommendations endpoint with seed tracks, artists, or genres, combined with tunable attributes (energy, danceability, tempo, valence) to match the user's mood or activity. Present recommendations with enough context (genre, popularity, preview) for the user to make informed choices.