With most computers, when you boot up (or turn on the computer) you hear something like this:
There was a time, though, when the default start up noise wasn't good enough for me. I wanted something better - something that set my computer apart from the others. So, I opened up Adobe Audition (an audio editing program) and an hour or so later had this:
LOL! It reminds me of the episode of the office where Andy makes a ring tone on his computer at home by recording all of the vocals to "Rockin' Robin."