Classes and containment

class Song:
    def __init__(self,title,artist):
        self._songTitle=title
        self._songArtist=artist
    def GetTrack(self):
        print(self._songTitle)
    def GetArtist(self):
        print(self._songArtist)

class Album:
    def __init__(self,title,artist,Song_List):
        self.__title=title
        self.__artist=artist
        self.__Songs=Song_List
    def GetAlbum(self):
        print(self.__title)
    def GetTracks(self):
        n=len(self.__Songs)
        for i in range(n):
            print(self.__Songs[i]._songTitle)

class Artist:
    def __init__(self,artist,dob,Album_List,Song_List):
        self.__artist=artist
        self.__dob=dob
        self.__Albums=Album_List
        self.__Singles=Song_List
    def GetSingles(self):
        n=len(self.__Singles)
        for i in range(n):
            print(self.__Singles[i]._songTitle)
    def GetAllTracks(self):
        n=len(self.__Singles)
        for i in range(n):
            print(self.__Singles[i]._songTitle)
        m=len(self.__Albums)
        for i in range(m):
            Album=self.__Albums[i]
            Album.GetTracks()

T1=Song("LH","ES")
T2=Song("KM","ES")
T3=Song("AT","ES")
A1=Album("P","ES",[T1,T2,T3])
T4=Song("SOY","ES")
T5=Song("COTH","ES")
T6=Song("GG","ES")
A2=Album("D","ES",[T4,T5,T6])
T7=Song("YNMMIDNU","ES")
T8=Song("XG","ES")
Art1=Artist("ES","1997",[A1,A2],[T7,T8])
Art1.GetAllTracks()