getting playlist via years

Hi Woebegone- it is currently not possible. However, you can restrict a playlist based upon the years active dates for an artist. Here's an example:

http://developer.echonest.com/api/v4/playlist/static?api_key=YOUR_API_KEY&artist_start_year_after=1929&artist_start_year_before=1940&format=json&results=20&type=genre-radio&genre=jazz

Paul