Though their debut album "Play" isn't scheduled for release until Monday, the K-pop brother-sister teen duo known as Akdong Musician is already generating major hype.

In anticipation of the release of "Play," here are the top five most successful album debuts of all time.

5. Britney Spears – "…Baby One More Time"

With an estimated 30 million copies sold worldwide to date, Britney Spears is still kickin' it with music domination with her latest album "Britney Jean."

4. Backstreet Boys – "Backstreet Boys"

Released in May of 1996, the debut album of Backstreet Boys remains one of the most influential boy band albums of all time. Selling over 22 million copies, the members continue to release album together, the latest being "In a World Like This" last year.

3. Spice Girls – "Spice"

The girl power movement in music hit its apex with the Spice Girls, and "Spice" remains one of the best-selling albums of all time, with an estimated 28 million copies sold.

2. Norah Jones – "Come Away With Me"

With over 26 million copies sold worldwide, Norah Jones is the unexpected hit-maker of 2002. Jones is known for numerous collaborative projects, including the album "Foreverly" with Green Day singer Billie Joe Armstrong and an upcoming country album as a part of the all-female trio, Puss 'N Boots, with Sasha Dobson and Catherine Popper.

1. Guns N' Roses – "Appetite for Destruction"

Hailed as an album that changed the direction of rock music, the debut album of Guns N' Roses is an iconic album with over 30 million copies sold.