A Complete Introduction To The Music Theory Of Intervals
These "mini chords" are the distance between two notes. The most commonly used by fingerstyle guitarists are 6ths and 10ths.
Play a C major scale beginning on the 3rd fret of the 5th string. Count as you play, giving a number to each note in the scale.
The distance between the 3rd fret of the 5th string and the 2nd fret of the 3rd string is a sixth.
Lower the note on the 3rd string by one fret and you have a minor 6th.
Do the same thing again, but this time keep going until you get to the 5th fret of the 2nd string. This is a 10th.
Lower the note on the second string by one fret and you have a minor 10th.
The 10th is great for fingerstyle guitarists to use. It sounds like a big chord but it only uses 2 notes. This makes it easy to grab so it's great to use in fast moving parts of a song.