IDK, also known as Jay IDK, is an American rapper, singer, and songwriter from Prince George's County, Maryland. He first gained recognition in 2015 with the release of his mixtape "SubTrap." IDK's music is known for its introspective lyrics, which often explore themes of identity, race, and mental health. He has released several critically acclaimed albums, including "Is He Real" (2019) and "USEE4YOURSELF" (2021). IDK is known for his unique and experimental sound, which blends elements of hip-hop, R&B, and alternative music.