"The Prodigy" song search returns songs by "Prodigy"

When asking for songs by "The Prodigy", I sometimes get songs by "Prodigy". Both have significant catalogs of their own and dramatically different styles:

http://www.rdio.com/artist/The_Prodigy/

http://www.rdio.com/artist/Prodigy/

http://en.wikipedia.org/wiki/Prodigy_(rapper)

Using the first id from this search:

http://developer.echonest.com/api/v4/artist/search?api_key=API_KEY&format=json&name=prodigy&results=100

{"id": "AR4L4WQ1187FB51996", "name": "The Prodigy"}

Then doing a song search like this:

http://developer.echonest.com/api/v4/song/search?api_key=API_KEY&format=json&results=1&artist_id=AR4L4WQ1187FB51996&bucket=tracks&bucket=id:rdio-US

I get the song "Anytime (Feat. Un Pacino)" by "The Prodigy". It's actually by "Prodigy". The foreign id points to this track:

https://www.rdio.com/artist/Prodigy/album/Product_Of_The_80s/track/Anytime_(Feat._Un_Pacino)/