After the great response to the Chord Finder beta, we began working to implement this feature and make sure that the most common chords were included in the list. And after further review it appears that the current list contains a mixture of chords labeled with both ‘sus’, “sus2” and ‘sus4’. Since I personally use both ‘sus2’ and ‘sus4’ I was hoping to find a definitive answer as to whether ‘sus’ = ‘sus4’ or some other suspended chord type.
Thanks to Wikipedia:
A suspended chord (‘sus chord) is a chord in which the third is omitted, usually with either a perfect fourth or a major second added, although the fourth is far more common. The lack of a minor or a major third in the chord creates an open sound, which can suggest a minor or a major tonality.
The term is borrowed from the contrapuntal technique of suspension, where a note from a previous chord is carried over to the next chord, and then resolved down to the third or tonic, suspending a note from the previous chord. However, in modern usage, the term concerns only the notes played at a given time; in a suspended chord the added tone does not necessarily resolve, and is not necessarily “prepared” (i.e., held over) from the prior chord.
To summarize, a suspended chord occurs where the second or most often the fourth replaces the third.
major chord – is comprised of 3 notes: root, 3rd and 5th (ie: C chord is C E G)
sus2 chord – is comprised of 3 notes: root, 2nd, and 5th (ie: Csus2 is C D G)
sus4 chord – is comprised of 3 notes: root, 4th and 5th (ie: Csus4 is C F G)
Next theory lesson will be a brief lesson on added tone chords.
add4 chord – is comprised of 4 notes: root, 3rd, 5th and adding also the 4th (ie: Cadd4: C E G + F)
Whew! You made it through all the theory … to reward you, how about another free Christmas MP3? Todd Agnew’s 2006 release “Do You See What I See?” has a free track “No Room“