The Aeolian Harp App

Today's app is the Aeolian Harp app:

Aeolian Harp (http://aeolusapp.appspot.com/) The Aeolian Harp is named for Aeolus, the ancient Greek god of the wind; wind harps are the oldest forms of automatic music; app uses the wind harp as a metaphor and allows user to create relaxing animations and sounds without musical knowledge; touches and strokes generate visualizations and sounds which evolve in time; user defined parameter and color schemes can be used to explore the manifoldness of the underlying particle system; compass can be used to locate the following instruments in the four directions of the winds: Balalaika, Celtic Harp, Guitar, Gamelan, Guzheng, Kalimba, Koto, Marimba, Orchestral Harp, and Sitar; each of these instruments can be assigned to a compass direction with a double tap on a cardinal point; acceleration sensor is used to simulate the impact of gravity on the flowing particles; must increase the impact of gravity in the parameter settings to see the effects; other parameters can be used to control the duration of the sounds; endless loops can be created by a reduction of the evaporation parameter and an increase of the elasticity of the particles; snapshots of the animation can be sent via e-mail; recommended for headphones and external speakers; (iOS 8.0 or later).