<p>Since time immemorial, spiritual ceremonies have been accompanied by tones and sounds. Their relaxing and consciousness-expanding effects can also be applied in everyday clinical practice. Whether using string instruments, singing bowls, tuning forks, or the human voice itself, sounds can be produced almost anytime. Through the vibration of the air in the surrounding space, the human body is stimulated and strengthened.</p><p>This article provides an overview of commonly used sound instruments and their applications. Breathing exercises, like sounds, also promote relaxation. Several combined applications, particularly in conjunction with imaginative meditation techniques, are presented. Finally, singing or humming tones and melodies can also be regarded as a form of acoustic therapy. In this way, the spiritual dimension may also be integrated into medical treatment.</p>