• The classical music tradition of the ancient and medieval Indian subcontinent (modern Bangladesh, India, Pakistan) were a generally integrated system through the 14th century, after which the socio-political turmoil of the Delhi Sultanate era isolated the north from the south. The music traditions of the North and South India were not considered distinct until about the 16th century, but after that the traditions acquired distinct forms. North Indian classical music is called Hindustani, while the South Indian expression is called Carnatic (sometimes spelled as Karnatic). According to Nazir Ali Jairazbhoy, the North Indian tradition acquired its modern form after the 14th or the 15th century.
• Indian classical music has historically adopted and evolved with many regional styles, such as the Bengali classical tradition. This openness to ideas led to assimilation of regional folk innovations, as well as influences that arrived from outside the subcontinent. For example, Hindustani music assimilated Arabian and Persian influences. This assimilation of ideas was upon the ancient classical foundations such as raga, tala, matras as well as the musical instruments. For example, the Persian Rāk is probably a pronunciation of Raga. According to Hormoz Farhat, Rāk has no meaning in modern Persian language, and the concept of raga is unknown in Persia.
• Carnatic music can be traced to the 14th - 15th centuries AD and thereafter. It originated in South India during the rule of Vijayanagar Empire through the Keerthanas composed by Purandara Dasa. Like Hindustani music, it is melodic, with improvised variations, but tends to have more fixed compositions. It consists of a composition with improvised embellishments added to the piece in the forms of Raga Alapana, Kalpanaswaram, Neraval and, in the case of more advanced students, Ragam Thanam Pallavi. The main emphasis is on the vocals as most compositions are written to be sung, and even when played on instruments, they are meant to be performed in a singing style (known as gāyaki). Around 300 ragams are in use today. Annamayya is the first known composer in Carnatic music. He is widely regarded as the Andhra Pada kavitā Pitāmaha (Godfather of Telugu song-writing). Purandara Dasa is considered the father of Carnatic music, while the later musicians Tyagaraja, Shyama Shastry and Muthuswami Dikshitar are considered the trinity of Carnatic music.
• Noted artists of Carnatic music include Tiger Varadachariyar, M D Ramanathan, Ariyakudi Ramanuja Iyengar (the father of the current concert format), Palghat Mani Iyer, Madurai Mani Iyer, Semmangudi Srinivasa Iyer, Nedunuri Krishnamurthy Alathur Brothers, MS Subbulakshmi, Lalgudi Jayaraman, Balamuralikrishna, TN Seshagopalan, K J Yesudas, N. Ramani, Umayalpuram K. Sivaraman, Sanjay Subrahmanyan, TM Krishna, Bombay Jayashri, T S Nandakumar, Aruna Sairam, Mysore Manjunath.
• Every December, the city of Chennai in India has its eight-week-long Music Season, which is the world's largest cultural event.
• Carnatic music has served as the foundation for most music in South India, including folk music, festival music and has also extended its influence to film music in the past 100–150 years or so.
• If Hindustani music is taken in as an entirely new form of music created from Indian classical music and Persian music, then Carnatic music was a form from the south of the sub-continent that developed further natively after this divergence. Carnatic music is the ancient Indian classical music that became distinct after Hindustani music was established. It is dated back to ancient periods, but was only distinct after Hindustani music was established. Purandara Dasa (1484–1564) was a Hindu composer and musicologist who lived in Hampi of the Vijayanagara Empire. He is considered Pithamaha (literally, "great father or grandfather") of the Carnatic music. Purandara Dasa was a monk and a devotee of the Hindu god Krishna (Vishnu, Vittal avatar). He systematised classical Indian music theory and developed exercises for musicians to learn and perfect their art. He travelled widely sharing and teaching his ideas, and influenced numerous South Indian and Maharashtra Bhakti movement musicians. These exercises, his teachings about raga, and his systematic methodology called Suladi Sapta Tala (literally, "primordial seven talas") remains in use in contemporary times. The efforts of Purandara Dasa in the 16th century began the Carnatic style of Indian classical music.
• Carnatic music, from South India, tends to be more rhythmically intensive and structured than Hindustani music. Examples of this are the logical classification of ragas into melakartas, and the use of fixed compositions similar to Western classical music. Carnatic raga elaborations are generally much faster in tempo and shorter than their equivalents in Hindustani music. In addition, accompanists have a much larger role in Carnatic concerts than in Hindustani concerts. Today's typical concert structure was put in place by the vocalist Ariyakudi Ramanuja Iyengar. The opening piece is called a varnam, and is a warm-up for the musicians. A devotion and a request for a blessing follows, then a series of interchanges between ragams (unmetered melody) and Tanam (the ornamentation within a melorhythmic cycle, equivalent to the jor). This is intermixed with hymns called krithis. The pallavi or theme from the raga then follows. Carnatic pieces also have notated lyrical poems that are reproduced as such, possibly with embellishments and treatments according to the performer's ideology, referred to as Manodharmam.
• Primary themes include worship, descriptions of temples, philosophy, and nayaka-nayika (Sanskrit "hero-heroine") themes. Tyagaraja (1759–1847), Muthuswami Dikshitar (1776–1827) and Syama Sastri (1762–1827) have been the important historic scholars of Carnatic music. According to Eleanor Zelliot, Tyagaraja is known in the Carnatic tradition as one of its greatest composers, and he reverentially acknowledged the influence of Purandara Dasa.
• A common belief is that Carnatic music represents a more ancient and refined approach to classical music, whereas Hindustani music has evolved by external influences.