Members enuenu Posted January 21, 2017 Members Share Posted January 21, 2017 I'm teaching myself basic theory and started with major scales then deriving the major triads. Starting with C major I believe there are 7 chord triads as follow;I - Cii - Dm iii - EmIV - FV - Gvi - Amvii° - Bdim However I just started playing with the Smart Piano in iOS GarageBand. You select a key and it allows a bunch of auto play features based on the chords in the key. When you select C as the key it presents the chords I detailed above but an extra chord is added, Bb. Why is Bb in there? It sounds like it fits but how was it derived as being part of the key of C? The chords are also shown in the following order on the screen from left to right;Em - Am - Dm - G - C - F - Bb - Bdim That's 8 triads. I notice that every key chosen presents 8 triads, Always with the 7 usual triads I - vii° plus the extra mystery chord. For example if you select G as the key the triads presented are;Bm - Em - Am - D - G - C - F - F#°Why is F included as a chord within G? Thanks Link to comment Share on other sites More sharing options...
Members 1001gear Posted January 21, 2017 Members Share Posted January 21, 2017 They add the b7 triad to every key? Truthfully, it will function as a V chord but with a more "modern" rock bent than the vii diminished and is probably included for that reason. Try a simple rock progression with the bVII and then substitute the vii diminished. Link to comment Share on other sites More sharing options...
Members onelife Posted January 21, 2017 Members Share Posted January 21, 2017 Apple put it in there so you could play 'With A Little Help From My Friends'. In the key of C the verse would be: C, G, Dm, G, C with the chorus: Bb, F, C. Link to comment Share on other sites More sharing options...
Members onelife Posted January 23, 2017 Members Share Posted January 23, 2017 ... and 'Let It Be'. Link to comment Share on other sites More sharing options...
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