Why doesn't music work in pygame python?

Question

linux

Why is the music not working in my game.
Here is the code for the game in python.

import pygame as pyg
import expansion
from random import *
color1 = randint(0, 255)
color2 = randint(0, 255)
color3 = randint(0, 255)
pyg.init()
sap=False
stb=False
rightup=pyg.image.load("Right.png")
leftup=pyg.image.load("Left.png")
up=pyg.image.load("Up.png")
bg=pyg.image.load("bg2.png")
spl1=pyg.image.load("spl1.png")
spl2=pyg.image.load("spl2.png")
spr1=pyg.image.load("spr1.png")
spr2=pyg.image.load("spr2.png")

bomba=False
sps= randint(0,1)
#def strelok(x,y):
sheeps= randint(1, 5)
end=False
hp=3
left=False
right=False
exph=expansion.highex()-70
expw=expansion.widghtex()-65

pyg.init()
pyg.mixer.music.set_volume(0.5)
window=pyg.display.set_mode((exph,expw))

flag1=False
pyg.display.set_caption("DrAttack")
start_patron=False
width = 100
height = 50
x = exph//2-width
y = expw-height-185
speed = 5
ypatron=y
xsheep=-100
ysheep=randint(60,250)
tsheep=randint(0,1)

if start_patron==False:
    font = pyg.font.Font(None, 60)

    xpatron = x

propusti_up=False
exp=0
run = True
pyg.mixer.music.load('1.mp3')
pyg.mixer.music.play(-1)
while run:
    pyg.mixer.music.play(0)
    pyg.time.delay(1)

    window.blit(bg, (0, 0))
    for event in pyg.event.get():
        if event.type == pyg.QUIT:
            run=False

    keys = pyg.key.get_pressed()
    if ((keys[pyg.K_RIGHT]  or keys[pyg.K_d])and x < exph - width - 1 and end==False):
        x += speed
        right=True

    elif ((keys[pyg.K_LEFT] or keys[pyg.K_a]) and x > 1 and end==False):
        x -= speed
        left=True
    else:
        right=False
        left=False
    if sap==True:
        sap=False
    if (keys[pyg.K_UP] or keys[pyg.K_w] or keys[pyg.K_SPACE]) and end==False:
        if start_patron==False:
            xpatron=x+25
        if start_patron==False:
            start_patron=True
    if start_patron==True:
        if ypatron<=0:
            start_patron=False
            ypatron=y


        ypatron-=10

        # if propusti_up:
        #     propusti_up=False
        # else:
        #     propusti_up=True
        #     ypatron = y
        #     while ypatron>1:
        #         print(ypatron)
        #
        #         #pyg.time.delay(1)
        #
        #         window.fill((0, 0, 0))
        #
        #
        #         ypatron-=1
        #
        #
        #         pyg.display.update()


        if sps==1:
            flag1==True
        else:
            flag1==False
    if xsheep > exph+100:
        flag1=True
    if flag1:
        xsheep -= sheeps
        if tsheep==0:
            window.blit(spl1,(xsheep,ysheep))
        if tsheep==1:
            window.blit(spl2,(xsheep,ysheep))
        if xsheep <=-150:
            flag1=False
    else :
        xsheep += sheeps
        if tsheep==0:
            window.blit(spr1,(xsheep,ysheep))
        if tsheep==1:
            window.blit(spr2,(xsheep,ysheep))
        #strelok(x,y)

    txt1="Score:"+str(exp)
    text1 = font.render(txt1, 1, (255, 255, 255))
    place1 = text1.get_rect(center=(exph - 100, expw - 970))

    if end==False:
        txt2 = "HP:" + str(hp)
        if hp<10:
            xpl=50
            ypl=40
        else:
            xpl = 80
            ypl = 40
    else:
        txt2="GAME OVER!"
        ypl = 40
        xpl = 140
        window.blit(text2, place2)

    text2 = font.render(txt2, 1, (255, 0, 0))
    place2 = text2.get_rect(center=(xpl, ypl))
    window.blit(text2, place2)
    window.blit(text1, place1)

    if start_patron and ypatron>0:

        pyg.draw.circle(window, (0, 0, 255), (xpatron, ypatron), 5)
    if left:
        window.blit(leftup, (x, y))

    elif right:
        window.blit(rightup, (x, y))
    else:
        window.blit(up, (x, y))
    #pyg.draw.rect(window, (128, 128, 128), (x, y, width, height))
    if (xpatron >= xsheep and xpatron <= xsheep + width) and (ypatron >= ysheep and ypatron < ysheep + height):
        print(123)
        xsheep = -100
        xpatron=50000
        if tsheep == 0:
            exp += 1
        else:
            exp += 2
        color1 = randint(0, 255)
        color2 = randint(0, 255)
        color3 = randint(0, 255)
        if tsheep == 0:
            if exp>=10:
                sheeps = randint(5, 5)
            else:
                sheeps = randint(1, 1)
        else:
            if exp>=10:
                sheeps = randint(5, 5)
            else:
                sheeps = randint(1, 1)
        # sheeps= randint(15,15)
        sps = randint(0, 1)
        ysheep = randint(60, 250)
        tsheep = randint(0, 1)

    if bomba :
        print(4)
        ybom+=2
        pyg.draw.circle(window, (255, 0, 0), (xbom, ybom), 10)
        if ybom >= expw-200:
            xbom=60000
        if xbom>=x and xbom<=x+width and ybom>y and ybom<y+height:
            hp-=1
            bomba=False
            stb=False
            print("HP",hp)

    if xsheep == x and stb==False:
        print(0)
        xbom=xsheep
        ybom=ysheep
        bomba=True
        stb=True
    if hp <= 0:
        txt2 = "GAME OVER"


        end=True
        pyg.time.delay(10)
    pyg.display.update()
pyg.quit()