As a youth I learned to play piano through the standard classical training. Reading notes and playing pieces note for note. As I continue to learn and think about music in a different way, I am often amazed at how simple it sometimes seems compared to how I try to understand music from a note by note perspective. I equate this with an article in Discover magazine some time ago that (in brief) demonstrated the becoming a master at a topic was analogous to changing the way we think about subjects from “m - a - r - y - h - a - d - a - l - i - t - t……….” (one letter at a time) to “Mary had a little lamb…..” and you even know what comes next. Hundreds of letters, but only a few score words, and only one poem.
So applying this new way of thinking, I called my buddy Kevin up and said “tell me about sus chords”. I’d been finding them in some of the songs I was learning, but did not understand their purpose.
First, a sus chord is chord a chord with the 3rd replaced by the 4th. In keyboard terms, a Csus is C - F - G. (There are other sus chords, like sus2 that are different, but I assume “sus” to be sus4).
I noted a great way to visualize this on a guitar. If you play “cowboy” chords, common on acoustic guitar (the open chords like A, Am, D, Dm, E, Em) then the sus are very easy to find. Play an Am, then play an A, then move the same finger that changed one more fret in the same direction. The Dsus to Dm is a particularly easy change, and you might recognize that this is in many tunes. One could also think of this as the minor chord having a flat 3rd, the major chord having a 3rd, and the sus chord having a sharp 3rd (4th). Thus, any chord where you know the major and minor forms easily point the way to a sus form.
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the Muse