I will share some interesting facts that I have learned from personal experience with music:
 
1.)  Reversed songs are not just simply a mess being played backwards.  They convey distinct moods and personalities just like forward songs.  Listening to reversed songs is actually like listening to a whole new song that is played forward.  A great example is the song "Ballad of the Goddess" which is the opening theme to the game Legend of Zelda:  Skyward Sword.  This is the song "Zelda's Lullaby" played backwards, but is made into a forward song that conveys a distinct mood and personality which is different than the original song.
 
You can apply the same process to any other song out there as well.  Go ahead and apply that process in your mind to the song "Love is a Battlefield" by Pat Benatar.  What you will get when you reverse her song is a mood and personality that conveys something dramatic and horrific.  You can use an audio software such as Audacity to reverse music.
 
2.)  If you listen to your favorite musical artist such as Michael Jackson's music, then when you go to bed and are in the process of falling asleep, your brain will take all that musical information it has heard and it will create whole new songs by Michael Jackson which are just as good and just as catchy as any other Michael Jackson song.  You will hear them pop up in your head when you are in the process of falling asleep since information tends to pop up in your mind during the sleeping process.
 
You can even make this process happen in your waking life by allowing your brain to focus on creating a whole new song and your brain will automatically create that song for you.  This can even apply to the best artists out there such as Beethoven.  In other words, you can create the next greatest songs by Beethoven in your own head.  The brain is an amazing organ and it is no problem for it to create the next greatest songs.  This is a very useful technique to create the greatest songs.
 
3.)  If you listen to a song on a pair of headphones and put the headphones down, then your brain will attempt to create a song out of all that vague muffled noise.  It will be a completely different song than the one that was actually there.  This is yet another technique to create new songs.
 
4.)  Lyrics don't always go with songs.  Some songs can sound sad, but have happy lyrics and vice versa.  You can feel a certain way about a song, but for that feeling to not always match up with the type of feeling that the lyrics themselves convey.  

as to number 3 kind of, i noticed long ago that when a song is playing, but you can't quite hear it to make out what it is due to background noise, or volume being to low or whatever, you do indeed create a song in your head, unfortunately if you aren't in a position to get it down in some manner, as soon as you become aware of what the song actually is the magic is gone. for many years after first experiencing this i have wanted to try it out by setting up the situation while being prepared to get it down, unfortunately i never have, but from the many times i have experienced this the songs that are created in your head do seem quite good. although i fear in trying to set the situation up and not being the random thing it has been in past experiences may loose the magic of the moment. you would of course have to not know what songs were playing in advance, because like i said, once you become aware of what it is that is actually playing . . . it is gone.
 
maybe one day.

Oh good. It's this guy again.

Beepster
Oh good. It's this guy again.

Don't worry.  I am actually deciding to learn how to compose now.  This is because I have moved on from my previous hobby which was playing videogames.  I have actually grown tired of this hobby and have moved on to having a true genuine interest in composing now.  I am also sorry if I was disrespectful or violent in the past.  I was having a traumatic experience.  During traumatic experiences, you have negative attitudes and perceptions such as not bothering with your goals/dreams, giving up, becoming angry/hostile, etc.  But that is done and over with now and I never meant any of those things I've said.

All my songs sound backward. That's for the post!

Number nine?, Number nine? Number nine?........

I had a recording full of pink noise on it.  I played it backwards and now it sounds knip.

I tried playing a country song backwards only to find that my truck ran again, my girlfriend returned and my dog wasn't dead.
 

I put spot remover on my dog and now he's gone.

I don't want Michael Jackson anywhere near my subconscious, thank you.