In the audio titled "Brother", the enthusiasm is tangible through the male voice that takes us through the narrative. The voice carries a tone full of vigor and excitement, and frequently interjects with a cheerful "yay". However, the enthusiasm is often coupled with a hint of sarcasm, adding a unique flavor to the overall delivery. It's evident that the voice is a key player in the audio, effortlessly conveying a range of emotions and feelings, and maintaining a strong connection with the listener throughout. Despite the sarcasm on display, the voice retains its charm and appeal, bringing forth the essence of the title "Brother" to the fullest.