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For instance, in the key of Cm we could borrow Am7-5 from C Dorian mode. But also C Jazz minor has Am7-5. Also F7 from C Dorian mode and F7 from C Jazz minor. There will be more in different modes if I keep looking. But what are the differences in these situations? Is it ultimately the scale??

  • So are you asking - if are in C minor and you borrow Am7-5, how do you know what scale you're borrowing it from? – topo Reinstate Monica Mar 31 '18 at 8:52
  • @topomorto Yes , and whats the difference if I choose either one – Hyun Yoo Park Mar 31 '18 at 8:54
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    It seems like the same general question as your recent one here, just a different specific case..? – topo Reinstate Monica Mar 31 '18 at 9:48
  • @topomorto Oh I see I thought maybe there will be another answer or something.. – Hyun Yoo Park Mar 31 '18 at 10:46
  • I think the general answer is the same - were you looking for more detail, or suggestions for perspectives to see these specific chords from? – topo Reinstate Monica Mar 31 '18 at 10:59
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'Borrowing' is just a device for making you happy that using a certain chord is 'allowed'. If you're preparing an excursion to another key, 'borrowing' some chords from that key can be effective - for instance if you're in C major and contemplating a move to Eb major (a very common modulation, beloved of the 'Golden Age' songwriters) it can be a good idea to throw in some Fm chords. Fm is a very common chromatic colour in C major, and is also a gateway to a ii, V, I modulation into Eb, that would be Fm7, Bb7, Eb.

Apart from that, I really wouldn't worry too much about 'borrowing'. If you're noodling around in C major, like I said Fm is a common chord to use. If it ISN'T the preparation for a modulation, 'borrowing' isn't a particularly useful concept. Just let it be a modified diatonic chord. It fits in well because two of its notes are diatonic. That's sufficient 'permission' to use it.

  • Thanks for your answer ! Sorry about being too much stuck in the theory and always trying to find some reasons..But I just want to perfectly know what I'm exactly doing and also master the basic rules before I start bending them..But I still always appreciate your answers ! – Hyun Yoo Park Apr 1 '18 at 13:15

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