Final answer:
Varnam is an essential element in a Carnatic music concert, often performed at the beginning to set the concert's tone and demonstrate the musicians' expertise.
Step-by-step explanation:
Varnam is indeed an important component in Carnatic music concerts. It is typically performed early in the concert, often as the opening piece, after the Varnam. This composition is intricate and serves multiple purposes: it helps to warm up the voice or instrument, set the tone for the concert, and is used to showcase the musician's skills in both rhythm and melody. Concerts leverage Varnam not only for its technical rigor but also for its aesthetic pleasure, acting as a bridge between the more flexible improvisation and the structured compositions that follow in the concert lineup.