There are 36,944 different songs, 16,236 different artists, and 537 different manufacturers.
So, you can have different artists singing the same songs, and different manufacturers making different renditions of the same songs from different artists, or even from the same artists!
Oh yes... with and without vocals can double the above numbers yet again.
So... you figure out the duplications you might have, and what the heck "duplication" means! If a singer demands a Karaoke Bay rendition of a song because it was acoustically recorded, and you only have SC that was synthesized, they may not be happy.
