Is the 1st 4/5 releases classed as worldwide or just in the US? Because:

QUOTE:
"That honor is held by Mariah Carey, who is also the only artist to have their first 5 records top the charts."

Actually TECHNICALLY Mariah DIDN'T have her 1st 5 records top the chart. Her 5th release from the Mariah Carey album was "There's Got to Be a Way" in the UK which failed to crack the top 50, instead of "I Don't Wanna Cry", which topped the US charts followed by "Emotions" from the album of the same name topping the charts.

So although she DID have her 1st 5 US singles ( "Vision of Love", "Love Takes Time", "Someday", "I Don't Wanna Cry", "Emotions") topped the US chart, they technically were NOT her 1st 5 releases - which were "Vision of Love", "Love Takes Time", "Someday", "I Don't Wanna Cry" and "There's Got to Be a Way".

Also, again TECHNICALLY Lady Gaga's 1st 4 releases DIDN'T all hit number 1 - "Just Dance", "Poker Face", "Eh, Eh (Nothing Else I Can Say)" [didn't get the number 1 in any country] and "LoveGame" [didn't get the number 1 in any country] were TECHNICALLY her 1st 4 releases, albeit in different countries but still her 1st 4 nonetheless.

These were followed by "Paparazzi" which hit number 1, followed by "Bad Romance", which so far would make 4 number 1 singles out of 6 releases (not the 1st 4 though) plus "Bad Romance" is off "The Fame Monster" which Lady Gaga has stated is her second Studio Album therefore NOT her debut release so "Bad Romance" cannot count towards the 4 number 1 claim.....