Strom
House, Ep, Organ, and Warm are deep-house tones. Pick a root, hold a chord quality. Latch keeps it; Arp walks it.
Signal path closed
Tap Arm engine — you should hear a short click. Phones keep the oscillators muted until that tap. On iPhone, flip the Ring switch on (above the volume buttons) and turn the volume up; Silent mode mutes Safari.