The first, Waltz of a Robot's Heart, is a short, moody 8-bit piece which is weird because robots totally don't have feelings, right?
The second, Birthday Waltz, is an upbeat, march-styled waltz with the melody from the "Happy Birthday" song (don't worry, most of this is still original composition though.)
The creative processes on these songs were very different (the robot one I mostly did in one day, and the birthday one I mostly composed in my head at work over the last couple weeks before putting it into OS) but I had fun coming up with each and I hope you enjoy them.