This document discusses various musical instruments and concepts from India, including: - Ghan, avanaddh, sushir, and tat being types of percussive instruments. - Sushir being known as "blown air" and tat being a string instrument. - Tala referring to the common Indian system of rhythm or what is called 'clap'. - Samagana being singing based on a set of pitches popular during the Vedic times.