Research resultsChamber music was developed for small room with few instruments. It started in 1770s by Hayden, Mozart andFirst auto biography started by “”airelllus augustiinus” hypponensis”( aka st Augustine )Attributed to Della Temple:The four ways to demonstrate infinity in the number system are:arithmetic progression in the direction of large numbers using addition, progression of small Numbers using subtraction, the increase of large numbers using multiplication and the decrease of small number using division.Opera started in Italy at the end of the sixteenth century. The one recognized is Jacobo Peris in 1598.Common to all music in the world is rhythm.