Sequential Fourm Synthesizer Keyboard, 37-Note, Slim-Key Fourm is a compact analog synthesizer that invites you to play, shape, and perform with unprecedented expressionWith its legendary Sequential tone, hands-on modulation, and uniquely responsive keybed, Fourm is a creative partner helping to bring your musical ideas to life. Fourm delivers four genuine voices of Sequential analog sound, built on the legendary Prophet-5 voice architectureright down to its envelope response curves. With dual oscillators offering simultaneous wave selection and a classic 4-pole low-pass filter, now enhanced with bass compensation, Fourm captures the warmth and punch that shaped a generationand takes it to the next level. Fourm's 37-note slim-key keyboard features polyphonic aftertouch, unlocking expressive techniques like guitar-style note bends, solo voice swells, and other nuanced articulationscompletely transforming the experience of playing a modern analog polysynth. Inspired by the Pro~One, Fo