How much exposure is overexposure?  Carrie Underwood may be about to find out.

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CMT has announced it will premiere the American Idol fourth-season champ's new "So Small" music video for six straight hours -- a total of 66 times -- on Thursday, September 20 from 6AM to 12PM ET/PT. 

In addition, the cable network's CMT acronym will also have new meaning, becoming "Carrie Music Television" during the music-video block.

The video for "So Small" -- the first single from Underwood's upcoming "Carnival Ride" second album -- was directed by Roman White, who captured 2007 CMT Video of the Year and Female Video of the Year honors for the video for "Before He Cheats."  "So Small" represents the fifth collaboration between Underwood and White.

"So Small" was released on July 31 and debuted at No. 20 on Billboard's Hot Country Songs' chart, making her the first female to debut in the Hot Country Songs' Top 20 in 43 years. "So Small" currently sits at No. 24 on Billboard's Hot 100 Singles chart as well as No. 12 on the Hot Country Songs' chart.

"Carnival Ride" is scheduled to be released October 23.
About The Author: Christopher Rocchio
Christopher Rocchio is an entertainment reporter for Reality TV World and has covered the reality TV genre for several years.