Using modern digital recording methods, you can easily record one track over another, over another and so on until one person can sound like an entire band. Each track can be easily modified independent of the others. You can cut and paste pieces of music and edit out mistakes easily.

You can download a free program from the web called Audacity which can do all of these things. All you need is a computer, some devices to connect microphones or instruments to the computer, and the skill to use all the stuff. You could probably do it almost free if you already have a decent computer, microphone and a mixer. At worst it takes a few hundred dollars to get a decent system going.

Here is a link to a song of mine which is comprised of layers of me playing various instruments and singing.

Colors

On a song demo, the point would be to make the song as close to the sound of the final artist as possible. If you were demoing the song to an artist who would use harmonies and a full band, a layered demo could show off your song in its best light so that that she would relate to it. There is so much competition that you have to pull out all the stops to get heard.

Hope this helps.

Colin

I try to critique as if you mean business.....

http://colinwardmusic.com/

http://rosewoodcreekband.com/