Half Diminished (Minor Seven, Flat Five)

This arpeggio is very useful over a V7 (or a V9) chord.   Notice that the iteration beginning on A# is actually in the key of C major.  The A# is LI (sharp 6) in the major scale.    For “New Ears Resolution” students, also note that the key change is indicated by the presence of a “pivot note.”   Marked as (TI=LI), this notation is understood to mean “The note B natural, (TI in the old key of C major) will now become LI in the new key of Db major.”   Once grasped, this understanding of modulation as described by a pivot note is a very powerful concept when one attempts to navigate the changes of a song with many internal key changes (such as “All the Things You Are.”)  

TI RE FA LA FA RE

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