Retrieve Spotify song IDs?

I can use the Echo Nest API to retrieve a list of songs with their corresponding artist names, song titles, and Echo Nest song IDs. I have modifie the API call using the "&bucket=id:spotify" code so that the request returns a Spotify artist id. Is there any any way to retrieve Spotify song IDs?

The line of code I am using is: http://developer.echonest.com/api/v4/playlist/basic?api_key=' + ENV['ECHONEST_API_KEY'] + '&song_id=' + URI.escape(@seed) + '&format=json&results=5&bucket=id:spotify&type=song-radio