TikTok has introduced the new addition of "Sounds for Business" audio library, bringing more audio snippets from the pool of some of the TikTok famous influencers who are free for use inside the app in the promotion for the marketers.
There are going to be several new audio clips coming to TikTok "Commercial Audio Library" in order to provide you more options to work with at your campaigns.
According to TikTok:

Our all-new Sounds for Business – Voice Clips was made to make it incredibly easy for brands of every size to create all varieties of sound-rich content on TikTok with 18 custom voiceover audio templates you can use across any of your TikTok videos. They come to you via superstar TikTok Creators Anania, Matt Buechele, Devin Halbal, Good Children, Sani Sisters, and Very Gay Paint; these free tracks add some of the platform's most recognizable voices to your videos and the perfect soundtrack for trend-ready content.
 So the thought behind it is that now, you would be in a position to use better recognizable voices within your promotions in TikTok, based on audio clips recorded by stars on the platform.

Interesting, basically the partnership of creators of sorts without having to make deals with each individual creator. Of course, the audio isn't customizable, although you only can use samples that are already recorded, but perhaps this will just add that little extra zing to your TikTok clips.

And audio, incidentally, is a big part of the TikTok experience: so much so that 88% of TikTok users agree that sound plays a critical role in their engagement with the app. While 73% of TikTok users say that sounds prompt them to "stop and look" at an ad, you should start thinking about how you're going to use sound on the platform.

Though those stats are interesting in the context of the platform's ongoing dispute with Universal Music, which has seen Universal pull all of its music from the app.

Seems like a problem, especially with many big name stars like Taylor Swift, Adele, Drake, and Billie Eilish all signed to Universal.

But that's a digression, this new announcement about in-app audio content per se and how it might be used to help businesses better their in-stream promotions.

TikTok says that the 18 new voice clips audio are now available in its Commercial Music Library, which it also continues to add to with new music and sounds to assist in the creative process.