Rap-hop style:

rapparition (original): http://www.youtube.com/watch?v=pIMzlqn-g4M

One of my oldest songs that I've "finished".

Dating back more than 9 years.

A flying one:

far away (original): www.youtube.com/watch?v=sVfmiVgUFiM

This could work for a spaceship/car/any kind of speed vehicle racing game. However, somebody I know wrote me that it'd be suited for commercials.

2008-2009: year of making or maybe earlier.

Praising the dying:

funeral (2nd) [original]: http://www.youtube.com/watch?v=7nRsp0HT7nM

The second version of this song with a faster tempo and future-like instruments.

I guess it was created (actually it's a modification of the original version) somewhere between 2009-2010.

New:

electronic feelings (original): http://www.youtube.com/watch?v=kPN8Bv5lK2M

Defines ways of communication of man made devices.

Year of making: 2011 (if I recall correctly).

Yet another one:

printing news (original): http://www.youtube.com/watch?v=Yw7naVJTKXs

Defining the press through music.

Um, I think 2010 or so, it's when I made it.

As soundtrack:

astral viking (original): http://www.youtube.com/watch?v=OvhDKMlw-Eo

Wanted this to be a song played on a StarCraft II map but it didn't happen.

This was surely composed in 2011.

A really old one:

staccato (original): http://www.youtube.com/watch?v=w-Hy-1K01pQ

Features a video of my custom StarCraft: Brood War campaign Reincarnation and also points out some "bugs" the game AI has.

It might be from 2008 or earlier and has been enhanced along the years. Yeah, made way before I even started conceptualizing the campaign.