Yes Mac, after doing them for a while in a different order, I can see why you would say that : )

Also - found another GREAT program for memorizing the Interval Sounds - it's donation-based and free, for Android.

It is called Interval Recognition - Ear Train:

https://play.google.com/store/apps/details?id=uk.co.marchantpeter.intervalrecognition&hl=en

Very simple, very effective. I've put it into "Listen Mode"at first and set all to begin with middle C - for each interval you tap, it will play the first few notes of the respective song to help you remember that interval, and also place the name of the song it is using on top.