# Mismo arpegio pero con delay con feedback (ecos a tiempo de corchea).
# rate=8 -> step=125ms; delay 250ms = 2 steps; feedback 0.45 da ~3-4 ecos.
node clk = trig(period=0.125, duration=0.06)
node mel = seq(rate=8, steps=[220.0, 261.63, 329.63, 392.0, 523.25, 392.0, 329.63, 261.63])

node o1  = osc(saw, freq=mel)
node env = adsr(a=0.005, d=0.08, s=0.3, r=0.08, gate=clk)
node lp  = filter(lp, in=o1, cutoff=300 + env*3000, q=3.0)
node dry = lp * env * 0.5
node wet = delay(in=dry, time=0.25, feedback=0.45, mix=0.5)

out <- wet