Variations on the Theme from 'When Johnny Comes Marching Home'

The different variations are labeled with letters instead of the traditional numbers. There are some that deviate pretty far from the original theme, but I tried to maintain the tonality of it. Letter H is a minimalist approach. Letter I is an attempt to turn it into a waltz style. And there is one (can't remember the letter right now) that is a bit of a musical joke (it's When Johnny Comes Marching Home in the form of a funeral march).