Free up memory on your computer. You will need to have a lot of free memory space for recording music, so delete unnecessary programs or files from your PC. Make sure your computer has at least 250GB of memory space and 1GB of RAM, and features a mic and sound card.
Buy a music software program. The Cakewalk Sonar studio series and Steinberg Cubase SX recording software are popular choices for a PC, but there are many packages available. Look in shops and online to find a music software package that suits your budget.
Install the music software on your computer. Plug the PC mic into the correct port on your computer. A PC sound card will perform the same function as a MIDI interface and mixer combined, translating the sound coming through the mic into computer language and then, once the song is mixed, converting it to audio.
Create a song using the music software. There are hundreds of instrument effects stored on such programs. Select a time signature for your track--4/4, for example- -and specify how regularly you want each instrument to occur in the track. Drums are usually present throughout; guitars, keyboards and other instruments can be used as you wish. Once you have designed a few bars of your song, use the "loop" function on your music software package to listen to those bars as they repeat. This gives you an idea of how the back beat of your song will sound.
Record a vocal using your PC mic. Open a new sound file on your music software package and opt for an external recording. You can record other instruments in this way too, but the sound quality will be much higher using the instruments already saved on the software. Once you are happy with your vocal, layer this over your recorded track by adding the sound file to the drop down list of available instruments. You can then Insert it into the track in the same way as an instrument: by selecting it from the drop down list and clicking on the point in the track you want it to begin.