Lady Antebellum has reached another milestone with their biggest hit-to-date, "Need You Now." Billboard just confirmed that it is the longest running number one song by a country crossover group since Billboard started the Adult Contemporary radio airplay chart 49 years ago.
The June 5, 2010 Billboard issue will show "Need You Now" at the top spot for the 10th week and pass Rascal Flatts' 9 week record back in 2006-07 with "What Hurts the Most."