Python - Generator that creates the fibonacci sequence and then becomes dodecafonism song

fibonacci-midi.py

from __future__ import division
from itertools import chain
from pyknon.genmidi import Midi
from pyknon.music import Note, NoteSeq


def fib(n):
    a, b = 0, 1
    fibo = [a, b]
    while b < n:
        fibo.append(b)
        yield fibo
        a, b = b, a + b

fibo_seq = chain(fib(10E10))
seq = list(fibo_seq)[0]
midi = Midi(tempo=120)
midi.seq_notes(NoteSeq([Note(x % 12, 6, 1/16) for x in seq]), time=1)
midi.seq_notes(NoteSeq([Note(x % 21, 5, 1/16) for x in seq]), time=0)
midi.seq_notes(NoteSeq([Note(x % 12, 4, 1/16) for x in seq]), time=2)

midi.write("fibonacci.mid")