How can I play more than one song at a time in PyGame?

I've got it working now but with the time delay is there a better way because I want two different scripts to be working I want to have these playing in this order and have my images come up in order and the images are a long script and have time delays on them too.

#!/usr/bin/env python
import pygame
pygame.mixer.init()
pygame.mixer.pre_init(44100, -16, 2, 2048)
pygame.init()
print "hey I finaly got this working!"
sounda= pygame.mixer.Sound('D:/Users/John/Music/Music/FUN.OGG')
soundb= pygame.mixer.Sound('D:/Users/John/Music/Music/Still Alive.OGG')
soundc= pygame.mixer.Sound('D:/Users/John/Music/Music/turret.OGG')
soundd= pygame.mixer.Sound('D:/Users/John/Music/Music/portalend.OGG')
sounda.play()
pygame.time.delay(11000)
soundb.play()<P>
pygame.time.delay(180000)
soundc.play()
pygame.time.delay(90000)
soundd.play()