This is one-half of one megabyte in size as opposed to the full sized mp3. Four of the five channels when recorded where in the bass range to blend together. While the center channel is the overt channel separate from the other four of the five channels. Two of the hidden channels are the far left and the far right. And both fifty percent left along with fifty percent right are the other two channels. There are instructions about how to more successfully fart out pieces of bowel contents into whatever is in place to catch them.