Katz Praatz releases Jazz Sketch 1.6 with expanded chord library

Tiny jazz tool gets a quiet but chunky upgrade, adding more progressions and better MIDI tricks for pocket-change money.

Jazz Sketch update lands

• Katz Praatz rolls out Jazz Sketch 1.6.
• Chord library jumps close to a thousand.
• Update builds directly on version 1.5.
• Focus stays narrow and intentional.

What actually changed

• Ninety-six fresh progressions added.
• New tools tag and explain chords.
• MIDI export gets cleaned up.
• Workflow aims at speed, not menus.

What the app is for

• Drag-and-arrange jazz harmony ideas.
• Stack progressions with tension chords.
• Export sequences straight into a DAW.
• Double duty as a harmony learning aid.

Platform and price reality

• Runs as a Java-based .jar app.
• Works on Windows, MacOS, and Linux.
• Needs Java or JRE 8 or newer.
• Sells for $6.99 USD on Gumroad.