Pápai came into contact with music early as his older brother had started writing songs and playing guitar at the age of four.

His public debut was in 2005, when he was a part of the second season of the TV2 show Megasztár, where he was eliminated in the consolation rounds, but was interviewed by the Budapest daily tabloid Blikk.

In 2006, he collaborated with his then-roommate, rapper Majka with Nélküled and Nekem ez jár, but his greatest success came in 2015 with Mikor a test örexik.

[3] On 8 December 2016, it was announced that Pápai would be one of the thirty acts participating in the 2017 edition of A Dal, the national selection for Hungary in the Eurovision Song Contest 2017 with the self-penned "Origo",[5] in which he progressed to the final and won the competition, giving him the right to represent Hungary in the Eurovision Song Contest 2017, coming in 8th place overall.

Following his Eurovision 2019 participation, Pápai moved away from the apartment him and Majka were renting, but the two remained close friends.