Launched in 2001, MYX is the music channel of ABS-CBN and is currently the number 1 music channel in the Philippines. MYX Philippines is known for featuring the music videos' lyrics on-screen, allowing the viewers to sing along.

MYX Hit Chart is a weekly compilation of all the votes gathered for the whole week from the ultimate day-to-day tabulation of the Philippine's hottest hits.

Spears is the only international female artist to have the most number 1 hits in the history of the MYX Hitchart. She is also the only female artist to have all of her entries reach the top ten posts. From 2002 to 2005, her number 1 hits were:

1. Boys (feat. Pharrell Williams) - stayed at the top for 5 non-consecutive weeks
*The single was number 5 in the 2002 Year-End Countdown.
2. Anticipating (MYX Exclusive video) - glorious for 3 consecutive weeks
*The single was number 12 in the 2002 Year-End Countdown.
3. Me Against the Music (feat. Madonna) - was scintillating for 8 non-consecutive weeks
* The single was at number 6 in the 2003 Year-End Countdown.
4. Toxic - fantastically intoxicating for 4 consecutive weeks
* The single was number 1 in the 2004 Year-End Countdown.
5. Everytime - reigned so tough for 3 weeks
* The single was number 9 in the 2004 Year-End Countdown.
6. Do Somethin' - was sizzling & hot for two weeks at the top