Betcha Gon' Know (The Prologue) is the opening track on Mariah Carey's 12th studio album, "Memoirs of An Imperfect Angel." The song was written & produced by Mariah Carey, Christopher "Tricky" Stewart, James "Big Jim" Wright, and Terius "The-Dream" Nash.
The song was recorded at several recording locations such as The Boom Boom Room in Burbank, California, the Studio at the Palms in Las Vegas, Nevada, and at Honeywest Studios in New York City.
A remixed version of the song featuring singer R. Kelly was planned to be released on the remix album of "Memoirs of an Imperfect Angel" entitled "Angels Advocate," but the album was cancelled in favor of a new studio album.
The song received mixed responses from music critics, being called "promising" by Slant Magazine, but the New York Times criticized the song for its "lackluster arrangment and Mariah's vocal execution."
The song peaked at #66 on Billboard's Hot Digital Songs chart in October of 2009, staying on the chart for 2 weeks.