Performances of Carnatic music

The late Ariyakudi Ramanuja Iyengar, a veteran Carnatic music vocalist, is credited with establishing the contemporary concert format which has been in use by Carnatic musicians to this day.[3]

A contemporary Carnatic concert (called a katcheri) usually lasts about three hours, and usually comprises a number of varied compositions. Carnatic songs are composed in a particular raga, which means that they do not deviate from the notes in the raga. Each composition is set with specific notes and beats, but performers improvise extensively. Improvisation occurs in the melody of the composition as well as in using the notes to expound the beauty of the raga.

Concerts usually begin with a varnam or an invocatory item which will act as the opening piece. The varnam is composed with an emphasis on swaras of the raga, but will also have lyrics, the saahityam. It is lively and fast to get the audience's attention. An invocatory item, may alternatively, follow the varnam.

After the varnam and/or invocatory item, the artist sings longer compositions called kirtanas (commonly referred to as kritis). Each kriti sticks to one specific raga, although some are composed with more than one raga; these are known as ragamalika (a garland of ragas).

After singing the opening kriti, usually, the performer sings the kalpanaswaram of the raga to the beat. The performer must improvise a string of swaras in any octave according to the rules of the raga and return to beginning of the cycle of beats smoothly, joining the swaras with a phrase selected from the kriti. The violin performs these alternately with the main performer. In very long strings of swara, the performers must calculate their notes accurately to ensure that they stick to the raga, have no awkward pauses and lapses in the beat of the song, and create a complex pattern of notes that an experienced audience can follow.

Performers then begin the main compositions with a section called raga alapana exploring the raga. In this, they use the sounds aa, ri, na, ta, etc. instead of swaras to slowly elaborate the notes and flow of the raga. This begins slowly and builds to a crescendo, and finally establishes a complicated exposition of the raga that shows the performer's skill. All of this is done without any rhythmic accompaniment, or beat. Then the melodic accompaniment (violin or veena), expounds the raga. Experienced listeners can identify many ragas after they hear just a few notes. With the raga thus established, the song begins, usually with lyrics. In this, the accompaniment (usually violin, sometimes veena) performs along with the main performer and the percussion (such as a mridangam). In the next stage of the song, they may sing niraval or kalpanaswaram again.

In most concerts, the main item will at least have a section at the end of the item, for the percussion to perform solo (called the tani avartanam). The percussion performers perform complex patterns of rhythm and display their skill. If multiple percussion instruments are employed, they engage in a rhythmic dialogue until the main performer picks up the melody once again. Some experienced artists may follow the main piece with a ragam thanam pallavi mid-concert, if they do not use it as the main item.

Following the main composition, the concert continues with shorter and lighter songs. Some of the types of songs performed towards the end of the concerts are tillanas and thukkadas - bits of popular kritis or compositions requested by the audience. Every concert that is the last of the day ends with a mangalam, a thankful prayer and conclusion to the musical event.