Her vocal range spans approximately three octaves, from C3 to E6, which is extremely rare in vocalists. This exceptional range allows her to smoothly navigate between different notes and execute complex melodic phrases with excellence. What makes her voice even more impressive is her ability to control her vocal register, producing dramatic and expressive tonal qualities.

Haideh's capabilities extend beyond her technical aspects. She has a exceptional voice that has the power to stir deep emotions. Her strong association with Persian classical music makes her voice a ideal match for conventional and آهنگ های هایده folk music, but she has also discovered new boundaries by experimenting with crossover and contemporary styles. Her versatility makes her a sought-after performer in both domestic and international events.

Her remarkable vocal endurance and control enable her to sing long dramatic melodies with facility, producing an overwhelming effect on her listeners. With the intricacies of Persian classical music at her disposal, Haideh has mastered the art of elaboration, incorporating traditional techniques like tirajes and takai into her performances.

Throughout her illustrious career, Haideh has continued to push the boundaries of what is possible, showcasing her incredible vocal abilities in numerous concerts and recordings. Her partnership with artists from diverse backgrounds, from classical musicians to contemporary artists, testifies to her diverse and innovative approach to music. As a vocalist, Haideh remains one of the most celebrated and esteemed figures in the Persian classical music scene.