The strings on a guitar vibrate when you strum them or pluck them. Depending on how tight the strings are depends on the frequency of the sound (how high or low pitched it is). The circular hole is there to amplify the sound but it is not necessary.
If you get a rubber band and pull it really tight then strum it, it will make a higher pitched sound than if you loosen it and strum it. As you can imagine after time the stings on a guitar loosen that is why you need to re tune it.
Yes it works if you have a PS3 or XBOX360 guitar.
The guitar is the same any guitar works its just that it has a faceplate on
yes it works for all 3
Yes :)
No, but in Guitar Hero 5 it works!
yes ive got it an it works
No, that's not how that works.
yep any guitar, drum, vocal, or bass works.
Yes, the guitar grip works on all DS versions.
No, it only works in reverse, sadly...
Yes it will, because I have guitar hero 3 and 5, and the guitar hero 3 guitar, works with both (as long as the guitar hero guitar is second player on 5).
Yes, it works for all the Guitar heroes that came after Guitar Hero 3