Classical piano music is a form of art music produced or rooted in the traditions of Western music. It has also been noted for its development of highly sophisticated forms of instrumental music such as the concerto, symphony, sonata, and mixed vocal and instrumental styles such as opera which, since they are written down on sheet music, can attain a high level of complexity. New age music intends to create artistic inspiration, relaxation, and optimism. New age includes both electronic forms, frequently relying on sustained synth pads or long sequencer-based runs, as well as acoustic forms, featuring instruments such as flutes, pianos, acoustic guitar, and a wide variety of non-western acoustic instruments. Its easy piano music is often used by listeners for yoga, massage, meditation and reading as a method of stress management or to create a peaceful atmosphere in their home or other environments.