Hindustani classical music is an Indian classical music tradition. It originated in North India around 13th and 14th centuries. In contrast to Carnatic music, the other main Indian classical music tradition from South India, the Hindustani classical music was not only influenced by ancient Hindu musical traditions and Vedic philosophy but also by the Persian elements. Hindustani classical music is the most popular stream of Indian music.
Hindustani music is based on the raga system. The Raga is a melodic scale, comprising of notes from the basic seven- Sa, Re, Ga, Ma Pa, Dha and Ni. On the basis of notes included in it, each raga attains a different character. The form of the raga is also determined by the particular pattern of ascent and descent of the notes, which may not be strictly linear.