One of the three bags I bought is an "Espresso Blend", but I have no clue what's in it. Website didn't say, and I thought I'd take a chance. I only roasted 1/3 cup of each. The Espresso Blend actually smells the best at this point, followed by the Java.
...edit... I was wrong. Just looked at the website and they have a picture which shows Sumatra, Ethiopia, Brazil and Robusta. I wouldn't think I'd like that mix, but we'll see.