Mike Patton's vocals touch on crooning, falsetto, screaming, opera, death growls, rapping, beatboxing, and scatting, among other techniques. While already a proficient singer, Patton is fond of manipulating his voice with effect pedals and diverse tools. This has been a prominent feature in his project Fantômas. In a rundown on several songs sung by Patton, vocal coach Beth Roars distinguished his mastery of several styles from popular singers who usually focus on one approach, approximating Patton more to musical theater singers and contemporary classical performers. Critic Greg Prato writes, "Patton could very well be one of the most versatile and talented singers in rock music"; colleague Blake Butler called Patton "a complete and utter musical visionary and a mind-blowing and standard-warping genius." He has knowledge on multiple instruments as well.