Oh god I don't know what I'm doing!  This is my first attempt at making anything music related and I'm not even making anything original.  I simply wanted to see if I could make something that switches between the two songs a few times fairly smoothly.  I used no outside samples and just tried working within the confines of the songs themselves.  Also it was all made in Audacity lol.

The songs:

Kupo by AllLevelsAtOnce: https://www.youtube.com/watch?v=xkrRVrimCvU

all levels at once : kupo (sgap remix) by SoGreatandPowerful: https://www.youtube.com/watch?v=XzLDB_ngeXM