In my experience, knowing what an Amin7 CHORD is has been more useful than thinking about whether I should use F or F# for it. I know the targets are A C E G. If it's a stand alone chord, or it's not in an obvious key center, then whether I use F or F# as a passing tone is up to my ear and my discretion (with the usual caveats of what other musicians I'm playing with think, the "sound" of the song, etc.). So thinking about A Dorian or A Aeolian has been pointless.
If it's in a key center, use the sixth that's appropriate for the key. If it's not in a key center (e.g. an Amin7 vamp) then use your ear to determine which sixth to play. But then you've got five of the seven notes figured out, don't you? Say the F# sounds right= then you know your line is based on A C E G F#. That only leaves a choice on the B and D. No natural key/mode has F# and Bb, nor F# and B# with C natural. Therefore it's A Dorian and you're good to go.
Don't over think this stuff, just build up from the basics. And modal playing ain't basic to most music that electric bass players play. So, don't get hung up on them until you understand how chords are built and you've got the harmonized scale into your databanks (the A-D steps in my previous post).
THEN dig into modes.
John
If it's in a key center, use the sixth that's appropriate for the key. If it's not in a key center (e.g. an Amin7 vamp) then use your ear to determine which sixth to play. But then you've got five of the seven notes figured out, don't you? Say the F# sounds right= then you know your line is based on A C E G F#. That only leaves a choice on the B and D. No natural key/mode has F# and Bb, nor F# and B# with C natural. Therefore it's A Dorian and you're good to go.
Don't over think this stuff, just build up from the basics. And modal playing ain't basic to most music that electric bass players play. So, don't get hung up on them until you understand how chords are built and you've got the harmonized scale into your databanks (the A-D steps in my previous post).
THEN dig into modes.
John
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