In Carnatic classical music, alapana is a form of manodharmam, or improvisation, that introduces and develops a raga (musical scale). It communicates the permitted notes and phrases of the raga, setting the mood for the composition that follows. As a term that is Sanskrit in language, alapana means "to speak, address, discourse, communicate". It is the first part of Ragam Tanam Pallavi (RTP), which showcases a Carnatic musician's ability to understand a raga and improvise music set to it.
Overview
250px|thumb|right|Alapana at the start of Kiravani Raaga
The flavor of the raga is outlined in the alapana by rendering the raga's permitted notes in structures and phrases unique to the raga (known as "raga lakshanam"). Alapana typically precedes a song that is going to be sung in the same raga. It demonstrates proper knowledge of the raga by highlighting key phrases common to it. Alapana is rendered in different speeds, with a gradual increase in tempo. Likewise, the complexity of the patterns increases steadily as the alapana progresses.
Alapana, also referred to as ragam, is the exposition of a raga or tone. It is a slow improvisation with no rhythm, where the raga acts as the basis of embellishment. In performing alapana, performers consider each raga as an object that has beginnings and endings and consists somehow of sequences of thought.