Sound Choice question

[Rockrz]

Does Sound Choice have any music numbered SC4000, SC5000, or SC6000?

I was looking at someone\'s database where they claimed they had all of the karaoke music Sound Choice ever published... and there was no SC4000, SC5000, or SC6000

I see SC1000s, SC2000s, SC3000s.... SC7000s, SC8000s, SC10000s

But nothing for SC4000, SC5000, or SC6000 and cannot seem to find where they ever had anything online under SC4000, SC5000, or SC6000?

Just curious if they skipped numbering anything SC4000, SC5000, or SC6000