Fundamentals of Indian Music: Nada, Swara, Saptak, Shruti and Laya
What this domain tests
Fundamentals is the language layer of the paper: nada (sound), swara (pitch), saptak (register), shruti (microtone) and laya (tempo). Expect definition questions, symbol recognition and small numerical laya problems.
Core rules
- Nada is sound; ahata nada is produced by a strike or effort, anahata is unstruck. Musical nada needs definite pitch, useful volume and a recognizable timbre.
- The seven shuddha swaras are Sa, Re, Ga, Ma, Pa, Dha, Ni. Vikrit swaras are komal Re, Ga, Dha, Ni and tivra Ma. Sa and Pa are achala, so they have no komal or tivra form.
- Saptak means register: mandra (lower), madhya (middle) and taar (upper). A dot below or above a swara shows the register.
- Shruti is a microtonal position, not a fixed equal-tempered semitone. The classical count is 22, but practical intonation is raga-specific.
- Laya is tempo: vilambit, madhya and drut. Layakari is the rhythmic density built on that tempo, e.g. barabar, dugun, tigun and chaugun.
Worked example
A 16-matra tala is performed at 60 matras per minute. One avartan takes 16 seconds. In dugun, two rhythmic units occupy each matra, so the avartan takes 8 seconds. In chaugun it takes 4 seconds. The matra count and the tala's vibhag do not change; only the speed of events inside each matra changes.
Traps
Do not call every sound nada; do not treat the 12 piano semitones as the 22 shrutis; do not write Sa as komal; do not confuse saptak with its seven swaras; and do not use laya and layakari as synonyms.