What is the role of each accompanist?

The percussionist, normally the Tabla player, provides the rhythm for the performance. The rhythm shows the speed or the tempo of the composition being sung.

A Harmonium player follows the vocalist like a shadow and delivers the same Swars, i.e. notes or patterns of Swars or notes that the vocalist sings. Sometimes instead of or in addition to a Harmonium player there is a Violin or a Sarangi player. They perform the same role as the Harmonium player.

Additionally there could one or more singers providing vocal support. They follow the vocalist closely and accentuate the composition. They also play the Tanpura which is the string instrument providing the base Swar for the performance.