
Singer-songwriter Carole King performs on NBC's "Today" show in New York in 2010. (AP Photo/Richard Drew)

**FILE** Singer-songwriter Carole King performs on NBC's "Today" show in New York in 2010. (Associated Press)

Jenna Bush Hager (NBC via AP)

**FILE** Jenna Bush Hager, special contributor for the NBC "Today" television program, appears on the show in New York on Oct. 8, 2009. (Associated Press)

Newt Gingrich was written into an episode of NBC’s “Parks and Recreation” after he walked into a restaurant in Indiana where the show was filming. (Associated Press)

Newt Gingrich was written into an episode of NBC’s “Parks and Recreation” after he walked into a restaurant in Indiana where the show was filming. (Associated Press)

Grammy-winning singer Carrie Underwood will star as Maria von Trapp in NBC’s live broadcast of “The Sound of Music” planned for late next year. (Associated Press)

** FILE ** In this Nov. 2, 2012, file photo, Steven Tyler of Aerosmith performs on NBC's "Today" show in New York. (Photo by Charles Sykes/Invision/AP, File)

** FILE ** In this Nov. 2, 2012, file photo, Steven Tyler of Aerosmith performs on NBC's "Today" show in New York. (Photo by Charles Sykes/Invision/AP, File)