A music program uses the Song and Playlist class to keep track of songs and playlists of songs. (a) The Song class keeps track of a song's a title (a string) and a song's length (an integer) in seconds. Write the Song class by writing the appropriate constructor and "getter" methods. Appropriately indicate to users of the Song class that the title and length attributes should not be directly accessed-users of the Song class should use the getter methods to retrieve title and length information. Example Song construction and usage: song1 Song("Happy", 240) assert(song1.get_title)"Happy" assert song2.get length)240) class Song