I'm a guitarist, a bassist, a drummer, a pianist, and occasional vocalist. naturally, I make music!
I don't know how many of you are musicians, but surely there must be some. so let's hear it, if you actually exist. 
these are my latest two tracks, guitar and drums only:
https://soundcloud.com/yourfaceistheeagle/a-louder-guitar
https://soundcloud.com/yourfaceistheeagle/last-dose
That's pretty good, A Louder Guitar sounded very nice.
I don't have any instruments but I've tried to make a bit on the computer using various free programs. Mostly it has just been stitching premade things together or changing instruments on USSR anthems and I don't really think that I've made anything good I can attribute to myself really.
In the end even though it's more fun to make something original, I still enjoy messing with music. It's more important that it sounds good than where it comes from imo.
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USSR anthems here (from LMMS):
http://tinyurl.com/highfreqfunhttp://tinyurl.com/intenseorganredhttp://tinyurl.com/intenseorganblueSpore had a fun anthem editor you could use to make small, short music pieces where you could actually choose the notes, so I used that a bit many years ago.
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I made the intro I used to put on my YouTube videos in there (plus some Audacity editing), and the music in these vids is from there.
http://tinyurl.com/binaryplanetaryringshttp://tinyurl.com/uboxmilkomedahttp://tinyurl.com/blalandmusic-aviThen there was Aviary that Atomic told me about, kol, which was re-arranging premade music pieces, I used that to make the music in the first three Map War 2 vids, I think the stuff in the first one ended up well.
http://tinyurl.com/mapwar2game1http://tinyurl.com/mapwar2game2http://tinyurl.com/mapwar2game3Now I mostly use LMMS which is a pretty good, free program Matty showed me. Has lots of features and lets you edit notes.