Peter Pan Live!

Allison Williams as Peter Pan and Taylor Louderman as Wendy Darling in Peter Pan Live!

Virginia Sherwood/NBC

The audience for Peter Pan Live! was half the size of the last year's Sound of Music Live, but NBC brass expressed satisfaction with the viewership levels.

Peter Pan Live!, starring Allison Williams and Christopher Walken, was watched by 9.1 million viewers, 2.9 million of which are in the 18-49 demographic, based on overnight ratings released by Nielsen. That's a 46 percent drop from the overnight ratings for last year's Sound of Music that pulled in 18.5 million viewers.

Robert Greenblatt, chairman of NBC Entertainment, said he was pleased with the ratings and indicated NBC will continue to do event programming.

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"We didn't expect to reach the same rating as The Sound of Music since that was the first live movie event of its kind in over 50 years," he said in a statement. "But the high wire act of Peter Pan was a joy for everyone involved and I take my hat off to Allison Williams, Christopher Walken, the entire company -- and our incredible directors and producers for three months of the hardest work I've ever seen. I love these live events and we're already working on putting the next one together." Next year, NBC is planning a live broadcast of The Music Man.

NBC touted Peter Pan's ratings performance as the second most-watched non-sports Thursday program in more than five years, bested only by Sound of Music Live!

With an average rating of 4.13 million viewers on Thursdays, Peter Pan Live! delivered a 121 percent uptick in the network's audience.

When national numbers come in, the musical may see some erosion in the Chicago and Dallas markets, where the Cowboys-Bears NFL game was broadcast on CBS.