Script to keep track of keydown events during playing music.

music2time.py

import pygame
import time
import sys

def main(ogg_file, output_file):
    pygame.display.init()
    pygame.display.set_mode((100, 100))
    pygame.mixer.init()
    pygame.mixer.music.load(ogg_file)
    f = open(output_file, 'w')
    print("The music will start in one second...")
    time.sleep(1)
    print("The music starts now")
    pygame.mixer.music.play()
    start_time = time.time()
    while pygame.mixer.music.get_busy():
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit(0)
            if event.type == pygame.KEYDOWN:
                diff = time.time()-start_time
                f.write("{}\n".format(diff))
                print(diff)
    print("The music has just finished")
    pygame.display.quit()
    pygame.mixer.quit()
    f.close()

if __name__ == "__main__":
    if len(sys.argv) < 3:
        print("Usage: {} <ogg_file> <output_file>".format(sys.argv[0]))
        sys.exit(1)
    main(sys.argv[1], sys.argv[2])