<P> Although both members of the band are Christians and their songs often contain some allusions to religious themes, Twenty One Pilots is not considered and never intended to be a Christian band . </P> <P> The band's musical style has been described as alternative hip hop, electropop, indie pop, pop rock, rap rock, and alternative rock . They have also been described as rock, pop, electronica, emo rap, indie rock, pop - rap, hip hop, indietronica, and, in the case of Blurryface, reggae . </P> <P> Ultimately, it is difficult to categorize the band using a single genre only, since they bridge so many . This has been attributed partly to the fact that both Joseph and Dun are self - taught musicians, meaning that while producing their work they broke many musical conventions that they were not aware of, including staying confined to a single genre . </P> <P> Instrumentally, Twenty One Pilots bring a mix of piano (sometimes an electronic keyboard or a keytar), synthesizers, drums (sometimes mixed with electronic drums), vocals, and occasionally the ukulele and bass . Lyrically, their songs are written by Joseph, who incorporates both sung and rapped lyrics . Music journalist Carl Wilson has noted that Joseph's rapping is often compared to that of Macklemore, yet he wrote "but among the ranks of post-Eminem white rappers, I find Joseph more probing, sardonic, and expressive ." Joseph has stated that he never intended to become a rapper, but that when attempting to fit poetry which he had written with music, he found that rapping elements of it was the only way for it to fit within the song . </P>

Who writes the songs for twenty one pilots
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