changing instruments

I kinda understand what you're saying.
I can't remember where or how many times I transposed this song, so I can't answer your question. But let me give you a scenario of how some of this comes about. I look for an easier key, then down two half-steps, no..no good.........now up 5 half-steps.....oh that's good but way to high, so........let's drop in down a whole octave..down 12 steps........there, I have it........but it's got this funky look to it kinda like the music I posted here. Is this maybe why I getting music in a particular key but the music really isn't in that key? Also, are you saying that the music I posted could, in fact, be called a song in G and also a song in D ?
thanks again,
hb