YSY A in Bilbao

YSY A is the stage name of Alejo Acosta, an Argentine rapper born in Buenos Aires in 1998. He co-founded the freestyle competition El Quinto Escalón and later established a solo catalogue built around trap, including the albums Antezana 247, Hecho a Mano, Trap de Verdad and YSYSMO. He headlined Estadio Obras in 2019 as his solo career moved into larger rooms. The live presentation of YSYSMO reached GEBA in 2022, followed in 2023 by his first stadium concert at Estadio Huracán.