Roger Yang Pei-an is a Taiwanese rock singer known for breaking out as an "undiscovered" talent at the age of 35 in the Taiwanese music industry with the hit song, "I Believe" that established his powerhouse, octave-jumping vocal skills, leading him to be dubbed as the "Iron Lung Prince" by the Taiwanese media and the "Treble God" by his fans. His voice has often compared to late singer-songwriter Zhang Yu-Sheng due to his penchant for singing the latter's songs and their similar ability to sing high notes effortlessly and clearly without using falsetto.