Swara and Scale: The Foundation of Indian Classical Music

Swaras carry profound significance within the Indian classical music heritage, which encompasses both Hindustani and Carnatic streams. This research investigates the scientific and therapeutic importance of musical notes in these two ancient traditions.

Introduction to Indian Classical Music

The origins of Indian classical music reach back to the Vedic period, roughly 6,000 years ago, when the concept of Nadabrahma and a formal system of musical notes and rhythms first appeared in ancient scriptures. The Samaveda, regarded as the Veda of music, is considered the foundation of Indian musical tradition, with its structured melodies drawn from the hymns of the Rigveda. According to traditional knowledge, the earliest raga emerged from the Samaveda. Today, this tradition exists in two principal forms: Hindustani classical music and Carnatic classical music.

Indian classical music, celebrated for its intricate melodic structures and improvisational depth, relies on swaras as its essential components. These seven primary notes form the structural core of ragas, offering musicians a sophisticated framework for melodic exploration. Beyond their musical role, swaras are thought to resonate with both physiological and psychological systems, suggesting therapeutic applications that may support health and healing.

Numerous research studies have examined how Indian ragas and music therapy influence mental and physical well-being. Scholars have investigated the effects of ragas on emotions, mental health, cardiovascular function, and cognitive performance, with promising results. Music therapy itself is a clinical, evidence-based practice where therapeutic musical interventions are applied to achieve specific goals. Only professionals who have completed accredited programs and earned proper credentials practice this discipline. The principles of music therapy address physical, emotional, cognitive, and social needs. This framework allows for comparisons between Indian classical music, particularly Carnatic music, and music therapy as distinct but related approaches.

Multiple researchers have explained the relationship between music and the body's energy centers. A music therapist working with Indian Carnatic classical music can use its rich structure — ragas (scales), swaras (notes), srutis (pitch), and talas (rhythmic cycles) — to interact with these energy centers, delivering specific frequencies for targeted therapeutic intervention.

In a 2018 study by Sunitha and colleagues, participation in music therapy or musical activities led to reduced loneliness and improved mood regulation, thereby lowering the risk of depression and anxiety. Furthermore, the positive emotions evoked by pleasant music have been linked to dopamine release from the ventral striatum and ventral tegmental area.

P Das, in a 2022 study, examined how Indian classical music affected self-acceptance, social connectedness, and spiritual well-being among musicians during the pandemic. The findings revealed that Indian classical musicians reported higher levels in all three areas compared to non-musicians, suggesting that engagement with this music can enhance self-worth, social bonds, and existential meaning. The research also pointed to the potential of using Indian classical ragas as a Music Therapy intervention for managing stressful situations.

Substantial research has explored how Music Therapy can treat various ailments, drawing on ragas from Hindustani classical music through both allopathic and Ayurvedic lenses. Particular emphasis has been placed on specific ragas such as Darbari Kanada, Bageshree, and Malkauns. In musical terms, a scale is a series of pitches employed to construct music. Notes are frequently designated using letters — including A through G, along with symbols for sharp and flat enharmonic equivalents. Human perception of pitch works in a logarithmic manner, meaning that frequency ratios — not absolute differences in frequency — define relationships between notes. Musical scales involve the physics of resonators, harmonics, and beats, as well as the mathematics of irrational numbers, integer ratios, and logarithmic intervals.

The Indian Classical Music Scale

Known as the “SAPTAK” or “Swara,” the Indian classical music scale consists of seven primary notes. These are Sa (Shadja), Re (Rishabha), Ga (Gandhara), Ma (Madhyama), Pa (Panchama), Dha (Dhaivata), and Ni (Nishada). Each note possesses its own distinct frequency. Their approximate counterparts in Western music are Do, Re, Mi, Fa, Sol, La, and Ti.

The swaras are classified into two subtypes: “Achal Swara” and “Chal Swara.” The achal swaras, such as Sa and Pa, are notes with no variants or microtonal alterations — they are fixed and stable. Chal swaras, by contrast, can be played with embellishments or microtonal variations (gamakas) depending on the musical context, raga, and the artist's interpretation. These pitch-variable notes show flexibility compared to the stability of achal swaras.

Indian classical music incorporates seven complete notes (Shudh swara) and five derived half-notes (Vikruth swara). A raga is defined as an arrangement of notes — either Shudh or Komal — presented in either ascending or descending order. According to Sangeetha shastra, ragas exert a profoundly beneficial effect on the human body. Specific musical notes can induce emotional shifts and stimulate the brain, triggering improvisational activity in neurological processes. These same elements support the treatment of various ailments. The foundational tonic twelve-pitch system, known as Shruthi, includes both whole and derived notes. When a note's frequency exceeds its mean value, it is classed as Teevra swara; when it falls below the mean, it is called Komal swar. The fundamental expressive component conveying melody (Bhava) in Indian classical music is the raga. Researchers have employed Electroencephalography (EEG) to examine how the brain responds to stimuli. EEG rhythms fall into four main categories: delta (0.5 to 4 cycles/sec), theta (4 to 7 cycles/sec), alpha (8 to 13 cycles/sec), and beta (13 to 40 cycles/sec).

The Carnatic Music Scale

Carnatic music is among the most ancient surviving forms of classical music worldwide. Its origins reach back to the Vedic period, and it is regarded as an element of the Samaveda. Many households consider Carnatic music an essential part of life, valuing both its traditional cultural significance and its melodic beauty. Beyond pure entertainment, this musical tradition is also widely credited with therapeutic and healing properties.

The Carnatic music scale system is remarkably complex, anchored in the 72 Melakarta ragas. These foundational scales serve as the generative source from which many other ragas derive. Each Melakarta consists of seven notes arranged systematically. The notes in Carnatic music include: Sa (Shadja), Ri (Rishabha), Ga (Gandhara), Ma (Madhyama), Pa (Panchama), Dha (Dhaivata), and Ni (Nishada).

The Melakarta system organizes these notes into a specific sequence divided into 12 chakras (groups), each containing six ragas. Every Melakarta is further characterized by its distinct arohana (ascent) and avarohana (descent) pattern. This structured framework guarantees the uniqueness of all 72 scales, providing musicians with a vast spectrum of melodic possibilities.

The detailed sequence of notes is as follows: Shuddha Rishabha (R1), Chatushruti Rishabha (R2), Shatshruti Rishabha (R3), Sadharana Gandhara (G1), Antara Gandhara (G2), Shuddha Gandhara (G3), Shuddha Madhyama (M1), Prati Madhyama (M2), Shuddha Dhaivata (D1), Chatushruti Dhaivata (D2), Shatshruti Dhaivata (D3), Shuddha Nishada (N1), Kaisiki Nishada (N2), Kakali Nishada (N3).

The inherent complexity of traditional Carnatic music, built on raga and tala structures, has been formally modeled by researchers using a categorical approach. Carnatic music is founded on rational division rather than logarithmic division. The octave is based on a 1:2 ratio; Pa exists in the 2:3 ratio; this principle extends across all twelve swaras. Pairing instruments — such as damar flutes — aids rational division, typically achieved by ear rather than measured scale. Swara-sthanas in Carnatic music only specify the names of notes.

Gamaka, often described as the lifeblood of Carnatic music and its raga system, is central to musical expression. It can denote a fixed deviation from a swara-sthana, a temporal in decoration, or the method for approaching a nominal swara. The prevalence of gamaka means that the underlying definition of a note — whether determined by rational or logarithmic division — holds less significance in sustaining a prolonged raga; an appropriate swaroopam can be employed instead.

J Chandrashekhar and his team studied the spectral aspects of Indian musical notes, particularly within Carnatic music. Their work revealed that the energy distribution of a waveform among the various harmonic partials — known as formants — is clearly indicated by frequency energy spectra.

Understanding Music Therapy

Music therapy is a professional, research-supported method that uses musical interventions to accomplish personalized objectives within a therapeutic framework. Its primary goals include stress reduction, memory improvement, pain relief, and communication enhancement. Music therapy is applied in diverse settings including hospitals, rehabilitation centers, schools, and private practices, and has proven highly effective in numerous clinical applications. Only certified professionals who have completed recognized music therapy training programs may practice. These practitioners use their training to address individuals' physical, emotional, cognitive, and social needs.

While both Indian classical music and music therapy use music to affect emotional and psychological well-being, their contexts, methods, and goals differ significantly. Research suggests that playing pre-recorded music can improve symptom management in cancer care, whereas music therapy — particularly when led by a board-certified therapist — provides psychosocial support and can help strengthen a patient's inner resilience.

Patients with mental health conditions may find it beneficial to incorporate music into daily life as a tool for emotional regulation. Within music therapy settings, particular personality traits call for more targeted techniques when helping patients manage their emotions. Music therapy appears to guide patients toward developing more conscious emotion regulation strategies that take cognitive processes into account. Furthermore, the reflective experiences fostered through these techniques may encourage a shift toward a more adaptive and healthful self-image.

Conclusion: The Healing Power of Scale and Swara

Music exerts a profound influence on the body, spirit, and the natural world. Multiple studies have shown that both Indian classical music and Carnatic music are not only spiritually elevating but also beneficial for plant growth. As a therapeutic intervention, it is both simple and cost-effective. India boasts a rich cultural heritage and the world's oldest musical wealth — a fact well documented by numerous scholars. This article has aimed to demonstrate that the scales and foundational notes of Indian and Carnatic classical traditions possess genuine healing potential, already applied successfully in treating various diseases. Yet many aspects of this musical power remain to be fully revealed and understood.