music.py

class Music:
    def __init__(self):
        try:
            pygame.init()
            self.mixer=pygame.mixer
        except:
            try:
                from pygame import mixer,init
                init()
                self.mixer=mixer
            except:
                print('pleaze install pygame')
                raise SystemExit
    def load(self,filename):
        #load phone music
        self.filename=filename
        self.mixer.music.load(self.filename)
    def play(self):
        self.mixer.music.play()
    def stop(self):
        self.mixer.music.stop()
    def pause(self):
        music.pause()
class Sound(Music):
    def __init__(self):
        super().__init__()
    def play(self,time=2):
        self.mixer.music.play()
        sleep(time)
        self.mixer.music.stop()

test.py

#Test usage of this lib
from time sleep
a=Music() 
a.load('theme.mid') 
a.play() #playing phone music 
a=Sound() 
a.load('music.mid') 
a.play(2) #playing music for two seconds