<human>:  Why is the Indian classical music form called a raga?
<bot>: The word raga is a Sanskrit word meaning color or shade. The raga you are referring to is a musical scale that is used in Indian classical music. The notes of a raga are called swaras, and they are represented by letters of the Sanskrit alphabet. The first swara is called sa, and the last is called pa. There are many different ragas, each with their own unique combinations of sa and pa notes.