In this episode I respond to one of the community-requested topics ("Music Theory") and try to explain what seventh chords are and why they are used. Below are some of the terms that I use in the course of the discussion.
Interval: The distance between two pitches (sounded either consecutively or simultaneously)
Consonance: Relatively stable sound between two or more pitches
Dissonance: Relatively unstable sound between two or more pitches. Dissonance often needs a "resolution" to consonance
Chord: three or more notes sounded together
Chord progression: a succession of chords
Triad: a chord with 3 pitches, the adjacent pitches separated by the interval of the 3rd.
Seventh chord: a chord with 4 pitches, the adjacent pitches separated by the interval of the 3rd.
Tonality: harmonic system that governs the use of major and minor keys
Tonic: the central tone of a piece of music
Mode: major or minor [e.g. Symphony no. 5 in C minor]
Modulation: the process of changing keys within a piece of music
Scale: Ascending or descending series of notes that define a key or tonality, with a specific arrangements of half-steps and whole-steps. Major and Minor scales are most common in Western music
Comment #1 posted on 2015-04-10 19:56:42 by FiftyOneFifty
I thought this was going to be a podcast on Klingon battle cruisers.
Comment #2 posted on 2015-04-23 02:27:06 by Jon Kulp
Sorry Fifty, I don't even know what those are! Maybe you can record a follow-up. I actually thought the title might be confused with Star Wars droids, the Klingons never occurred to me.
Comment #3 posted on 2015-04-29 05:26:51 by thelovebug
I found this incredibly interesting as a musician with virtually no formal training... I look forward to hearing more on the theory of chord progressions!
Next: Major 7ths? Probably my favourite chord to (over)use.
Comment #4 posted on 2015-05-10 00:13:00 by FiftyOneFifty
The Klingon ship from the original Star Trek series was a class D7 battle cruiser https://www.ditl.org/Images/D/D7General1.jpg and you can still see the model still in use in the later series (Next Gen, DS9, Voyager).
Comment #5 posted on 2015-05-10 10:47:49 by Jon Kulp
I kinda see the resemblance...
That ship actually looks like it has some dissonance in it, such as the tritone between the C and the F♯ that I mentioned in the d7 chord the
Note to Verbose Commenters
If you can't fit everything you want to say in the comment below then you really should record a response show instead.
Note to Spammers
All comments are moderated. All links are checked by humans. We strip out all html. Feel free to record a show about yourself, or your industry, or any other topic we may find interesting. We also check shows for spam :).