social/reddit

In general, try to forget about scales and focus on playing the changes. Visualizing arpeggios is the quickest way to playing the changes.

If you want to noodle around in a scale, then here are some good bang-for-your-buck your options:

• Major Scale (for parts of a tune in a major tonality)
• Harmonic Minor Scale (for parts of a tune in minor tonality)

But you should probably focus on playing something different over each chord. The best bang-for-your-buck arpeggios for gypsy jazz are probably something like:

• Major Chord -> Major 6 Arpeggio (1, 3, 5, 6)
• Minor Chord -> Minor 6 Arpeggio (1, b3, 5, 6)
• Dominant Chord -> Dominant 9 Arpeggio (1, 2, 3, 5, b7)
• Dominant Chord -> Diminished 7 Arpeggio from the b9 (b9, 3, 5, b7 - relative to the root of the dominant chord)