#1
When you hold down a fret and on the next string up in this example the A string and the D string you hold down 5 frets over and it makes a ringing noise when you strum it as a power chord because the sounds are Identical (If the guitar is in tune.)

The Edge from U2 does this alot. For an example look at the opening of "The Saints are Coming".
Current Gear:

Epiphone Special II
Squier Champ 15W
Digitech RP90
2 Crappy No-Name Acoustics
#4
Quote by senselessfire
When you hold down a fret and on the next string up in this example the A string and the D string you hold down 5 frets over and it makes a ringing noise when you strum it as a power chord because the sounds are Identical (If the guitar is in tune.)

The Edge from U2 does this alot. For an example look at the opening of "The Saints are Coming".

well if you were to play the A string and fret the D string 5 frets over, that is not the same note so they will not sound identical. that would be playing the notes A and G. which i guess would just be considered harmonizing.

if you mean fret the A string at the 5th fret and play the open D, then you are just playing two of the same note.

honestly, the way your phrased your question is a little strange. do you mean double stops? which is playing two strings on the same fret.