Yeah I just loved the simplicity.
I used FL Studio I think 9.6 Beta, though the newest version out is 9.8. For the bell-tinkling-ish sounds I used a Sytrus preset, as well as for the lead melody snyth harmonies and the nylon-ish guitar. Just regular samples for the percussion though.
In terms of general mixing. I had two channels of the melody synth. Those 2 channels were sent to the same mixer channel, which had a little Reverb and actually (now that I have it in front of me) a surprisingly heavy LP filter. Mastering just had reverb and EQ, boosted at pretty much all frequencies except 1800Hz and 9500 Hz, both of which were lowered from their original point. That gave both a brightness and a depth to the sound, without it getting too muddy or overpowering. I also had a Flanger working, which I'm still not exactly sure how it works or what it does, but it seemed to add some phasing and airiness to the original sound, making it lighter and more blending. Then, a general limiter to top it off, which really didn't do much in the end :P

But yeah, all of these sounds were on my vomputer, I just sorta.... found them :P And then used the best ones for this. I input everything through basically point-and-click, which I've really gotten used to and come to love, although a keyboard might someday be nice since I'm learning piano now.

Hope this helps, and thanks for listening! :)