The Evolution of the Tar Fretboard: Using AI-Driven Spectral Analysis to Rediscover Lost Microtonal Scales
How are we using AI to recover the lost fretboard scales of 19th-century Mugham masters? Discover the microtonal evolution of the Tar and the future of digital musicology.

The Digital Resonance of Our Musical Heritage
The Azerbaijani Tar is not merely a musical instrument; it is the sonic embodiment of a nation's genetic memory. Reconstructed in the 19th century by Mirza Sadigjan into its 11-stringed form, the Tar possesses a unique structure designed to express the microtonal nuances of Mugham. However, over decades of standardization, some ancient fret arrangements and tiny intervals known as 'commas' have begun to fade from contemporary practice.
AI and the Secrets of the 'Golden Fund'
At PromptAZ Music, we are utilizing AI-driven spectral analysis to explore the ancient recordings preserved in Azerbaijan's 'Qızıl Fond' (Golden Fund). This technology allows us to:
- Measure the sound frequencies (Hz) in the performances of masters like Gurban Pirimov and Mashadi Jamil Amirov with mathematical precision.
- Identify the microtonal differences between modern fret positions and 19th-century performance styles.
- Reconstruct the exact mathematical models of forgotten Segah and Bayati-Shiraz scales.
The Frequency of Emotions in Mugham Modes
Each Mugham mode carries a specific energetic signature. Our AI analyses reveal that ancient masters achieved these emotional depths through subtle microchromatic shifts on the fretboard:
- Segah: Specific 'neutral-minor' intervals that evoke its signature romantic and lyrical mood.
- Chahargah: Sharp, bright frequency transitions that instill a sense of heroism.
- Humayun: Mournful micro-tones that provide its deep philosophical resonance.
This scientific approach enables future musicians to bridge the soul of the past with modern technology. Every fret on the Tar is a piece of history, and we are breathing new life into that history within the digital realm.