The Kinematic Chain in Hindustani Classical Singing: An Exploratory Bioacoustic Pilot Study of Seated Posture and Vocal Quality.

) estimation to objectively quantify performance efficiency through high-resolution pitch tracking. Descriptive analyses indicate that unstable postural bases are frequently associated with compensatory cervical protraction and reduced aerodynamic output. Intra-subject analysis revealed that correcting pelvic mechanics increased vocal efficiency by up to 38.5% (student 10) and Spectral Centroid by ∼171 Hz (student 7). Triangulation with participant feedback confirmed these findings: 70% of subjects identified mechanical anchoring (either via pelvic stabilization in Vajrasana or upper-body stabilization) as superior for breath control. These findings suggest that traditional stable postures, such as Vajrasana, function as a biomechanical optimization strategy to meet the specific acoustic and technical demands of Hindustani classical vocal performance.