Different ragas have always been played at different times of day. The inner reason for this is that every time of day has its atmosphere, its influence on us. The material reason is that as evening dress is wanted at a banquet, because for so long the eyes have been accustomed to see it, so our ears have been accustomed for very long to hear these ragas at night, in the evening, or at midday. Several ragas are usually sung before dawn. In India before dawn, everyone goes to his work or to his devotions, and there he finds himself very much helped by the stillness of the hour, by the finer vibrations. At midday the noise from all around is much greater and stronger notes are needed. The ragas for midday are made all with natural notes. The ragas of the night are with odd notes. The ragas of the early morning are made with flat notes.