[CM] CM tutorial example raises out-of-range error on guile/Snd

[Rick Taube]

please let me know if using (ice-9 format) this fixes the problem,  
try this:


(use-modules (ice-9 format))

(new seq :name 'pulse
      :subobjects
      (loop with d = .1
            for i below 80
            collect (new midi :time (* i d)
          :keynum (pickl '(c4 d4 ef4 f4 g4 af4 bf4 c5))
          :duration d
          :amplitude (interp (mod i 8) 0 .25 7 .75))))

(list-objects #&pulse :end 3)