example.py

#!/usr/bin/env python3

import socket
import time

music = [
    [('E', '4', '0.5'), ('E', '2', '1.0')],
    [('B', '3', '0.25')],
    [('C', '4', '0.25')],
    [('D', '4', '0.5'), ('E', '2', '1.0')],
    [('C', '4', '0.25')],
    [('B', '3', '0.25')],
    [('A', '3', '0.50'), ('A', '2', '1.0')],
    [('A', '3', '0.25')],
    [('C', '4', '0.25')],
    [('E', '4', '0.5'), ('A', '2', '1.0')],
    [('D', '4', '0.25')],
    [('C', '4', '0.25')],
    [('B', '3', '0.75'), ('Ab', '2', '1.0')],
    [('C', '4', '0.25')],
    [('D', '4', '0.5'), ('E', '2', '1.0')],
    [('E', '4', '0.5')],
    [('C', '4', '0.5'), ('A', '2', '1.5')],
    [('A', '3', '0.5')],
    [('A', '3', '0.5')],
    [('D', '4', '0.5'), ('D', '3', '0.75')],
    [('F', '4', '0.25')],
    [('A', '4', '0.5'), ('D', '3', '1.0')],
    [('G', '4', '0.25')],
    [('F', '4', '0.25')],
    [('E', '4', '0.75'), ('C', '3', '1.0')],
    [('C', '4', '0.25')],
    [('E', '4', '0.5'), ('C', '3', '1.0')],
    [('D', '4', '0.25')],
    [('C', '4', '0.25')],
    [('B', '3', '0.5'), ('E', '2', '1.0')],
    [('B', '3', '0.25')],
    [('C', '4', '0.25')],
    [('D', '4', '0.5'), ('E', '2', '1.0')],
    [('E', '4', '0.5')],
    [('C', '4', '0.5'), ('A', '2', '1.75')],
    [('A', '3', '0.5')],
    [('A', '3', '0.75')],
]

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('localhost', 1234))

for step in music:
    time.sleep(0.01)
    for note in step:
        data = 'NOTE ' + ' '.join(note) + '\n'
        s.send(data.encode('ascii'))
    time.sleep(float(step[0][2]))