eddie – Page 3 – Guitarator

Slash Chords

This lesson builds directly on the Chord Inversions lesson, so I suggest re-reading that one, if you have not read it yet.

That lesson introduced the slash notation, for example, C/G, pronounced C over G. In that lesson, the slash notation was used to choose an alternate bass note from the notes that are in the chord. The notation can be expanded, though, and you can play any chord over any other bass note. Because of the way they are written, I call these types of chords slash chords. You might also see them called alternate bass chords or compound chords. All it means is you play a different note in the bass, but it opens up a whole bunch of possibilities, especially when songwriting.

Add Chords

An add chord is any chord with extra notes added. The additional notes can be written as numbers or letters. They are written like CaddF# or Gadd9.

Chord Inversions

Last lesson, I covered interval inversions. You can re-read that now, if you want, though it's not a big deal if you don't. To summarize, inverting an interval just means measuring the distance between two notes starting on the second note instead of the first note, for example, instead of counting the distance from C to G (perfect fifth), you can start at G and count up to the C an octave above, giving you a perfect fourth.

A chord inversion is similar. It just means starting the chord on a note other than the tonic note.

Interval Inversions

Quick, what’s the interval between A and C?

Ok, it’s a trick question. The answer is it depends on which octaves the notes are in, and specifically which note is higher. That’s the concept of interval inversions that I will talk about here. I suggest reviewing my lessons on The Musical Alphabet and Intervals.

9th, 11th, and 13th Chords

Oooh, look at all those high numbers. Those must be really complicated, difficult chords! Probably sound craaaazy!

Ok, so maybe not.

These chord names may sound impressive, but they’re really just continuations of the same patterns we’ve already been using. A ninth chord is just a seventh chord with the added interval of the major ninth. An eleventh chord is just a ninth chord with the added interval of the perfect eleventh, and a thirteenth chord has the added interval of the major thirteenth.