Etherpad is an expressive touch-based music synthesis instrument for iPhone and iPad. Sweep your fingers across the screen to create evolving soundscapes, ambient drones, and generative textures. Powered by the legendary Csound audio engine, Etherpad turns your device into a portable synthesizer that responds to every touch with rich, organic sound. No music theory required — just touch, listen, and explore. KEY FEATURES • Multi-touch synthesis — Each finger controls pitch and timbre independently • Multiple sound presets — Switch between evolving pad sounds and textures • Visual feedback — Beautiful particle effects respond to your touches • Effect overlays — Add visual layers like ripples, glow, and trails • Scale selection — Choose from various musical scales for melodic exploration • Landscape & portrait — Designed for both orientations on iPad • Low-latency audio — Built on Csound, the industry-standard audio engine PERFECT FOR • Ambient and drone musicians • Sound designers and experimental composers • Meditation and relaxation • Children exploring sound and music • Live performers and improvisers • Anyone curious about generative music ABOUT CSOUND Csound is a powerful audio synthesis language used by musicians, researchers, and educators worldwide for over 30 years. Etherpad brings its sonic capabilities to your fingertips through an intuitive touch interface. TIPS FOR LIVE PERFORMANCE For uninterrupted performance on iPad, enable Guided Access (Settings → Accessibility → Guided Access) before playing. This prevents accidental gestures from interrupting your sound. Touch the surface. Hear the universe.