Under You will be a hit/sounds like a hit because Bebe Rexha wrote it. Sad because her own solo material hasn't connected w/ the GP. Her first EP is really good.
so i guess in the present day if you can consistently sell:
1 million copies of your album in the US - A-list
half a million copies of your album in the US - B-list
Otherwise you a singles artist, or just a flop.
Here's to Katy at least moving down to B with (sometime this summer anyway) ha good friend RihRih.