Voicings
The same chord, up and down the neck.
The same chord, everywhere
There's no single Am7. The same four notes live all over the neck, and each voicing sounds different — some open, some tight, some ringing.
How we score it
open strings ring out, campfire voicings barre movable, one shape up and down drop-2 spread, for jazz and solo playing compact tight clusters, for funk and r&b
Why it matters
Voice leading is the difference between chords that connect and chords that just sit next to each other.