UPDATE: Whitney Houston's 'I Will Always Love You' won in Round 1! Vote for 'I Will Always Love You' in Round 2 of the competition here.

Welcome to March Music Madness! Here at PopCrush, we've selected 32 of the most iconic pop songs released from the '80s to today (divided into brackets by decade) -- and now it's your job to vote and decide which song will be named the Greatest Pop Song of the Modern Era. May the best song win!

Two of the most famous and most talented pop artists ever, Celine Dion and Whitney Houston, happened to have two of the most iconic singles of the '90s. Little has to be said to argue the merit of 'My Heart Will Go On' or 'I Will Always Love You,' and this round of March Music Madness just might present one of the most difficult questions of this entire bracket: Should 'My Heart Will Go On' or 'I Will Always Love You' receive the title of the Greatest Pop Song of the Modern Era?

'My Heart Will Go On' became Celine Dion's biggest hit, with the help of one little movie called 'Titanic.' The song, which came into our lives in 1997, went to No. 1 around the world and was on the radio pretty much every time you turned it on that year. It topped the U.S. chart for two weeks and has sold more than 15 million copies since its release. It's a (multiple) Grammy winner, an Academy Award winner and a Golden Globe winner. Most importantly, the song (thanks to its success and Celine's unparalleled vocal prowess) stands out as one of the most beloved ballads of not only the '90s, but of all time.

'I Will Always Love You' was originally released as a country track by Dolly Parton, but in 1992, Whitney Houston turned it into one of the best-selling singles in history when it was recorded and released as part of the soundtrack of 'The Bodyguard.' Whitney's version of 'I Will Always Love You,' a soaring, soulful pop-R&B ballad, spent 14 weeks at No. 1 in the U.S. and became a two-time Grammy winner. Though Whitney sadly passed on in 2012, her voice will forever live on through this iconic performance.

Two pop divas. Two pop classics. Pick wisely and vote for the best ballad here, up to once an hour, from now through 12PM ET on March 11, when this round's voting closes. Either Celine's song or Whitney's song will move closer to being named the Greatest Pop Song of the Modern Era, and it's up to you to decide which one will make the cut. (No pressure.)