* Natural talent: Mars has a naturally high vocal range. He can hit notes that are well above the average male singer's range.
* Vocal training: Mars has undergone extensive vocal training to develop his voice and increase his vocal range. He has worked with vocal coaches to improve his technique and learn how to use his voice more effectively.
* Good vocal hygiene: Mars takes care of his voice by avoiding smoking, drinking alcohol in excess, and straining his voice. He also drinks plenty of water to keep his vocal cords hydrated.
* Healthy lifestyle: Mars maintains a healthy lifestyle by eating a balanced diet and getting regular exercise. This helps to keep his body and voice in good condition, which allows him to sing at his best.
In addition to these factors, Mars also has a unique vocal style that helps him to hit high notes. He often uses a head voice, which is a type of vocal register that produces a light and airy sound. This allows him to sing high notes without sounding strained or unnatural.
Overall, Bruno Mars is able to sing so high because of a combination of natural talent, vocal training, good vocal hygiene, and a healthy lifestyle. He has developed a unique vocal style that allows him to hit high notes with ease.