What will I hear at an Indian classical concert in Cambridge if I'm new to it?

A raga performance opens with the alap, a slow section with no pulse. In instrumental music the jor then brings in a steady pulse, and when the tabla enters with the composition, the rhythm takes hold. KalaSudha concerts run in two halves with a short interval, about 2 to 2½ hours. At Cambridge Junction, KalaSudha presented the sitar player Mehboob Nadeem with the tabla players Ustad Akram Khan and Dr Sam Evans. See the first-time listener guide and KalaSudha in Cambridge.