It builds up with time, specifically with the Daily Login Bonus Offer as well as Spin Wheel. Various other Monsters can't be distinguished in any way, such as the Shugafam on Shugabush Island, or in events where a mix can lead to two Monsters that share the same times.

To change the sound back to the initial beast sound, first make certain you remain in the Recording Workshop. After that choose the monsters who's part you want to transform back to regular and also when you're in their recording food selection, tap on the switch "Revert" When to turn your recording off.