Jonathan “Mad” Tsai (born July 13, 2001) is a young upcoming singer/songwriter whose original songs have gone viral on TikTok. He gained even more fame when he came out to his mother with his viral song “boy bi”, uploading her reaction to TikTok.

Mad is originally from Huntington Beach, California, and at age 13, began writing music and performing at local shows to help talk about experiences navigating mental health, bullying, self-love, and identity. He was involved in marching band and choir as a teen, and picked up the ukulele in high school.

Currently, Mad is based in Los Angeles, and occupies the majority of his time as a student at UCLA. He is involved in the university’s acapella group Resonance, and is pursuing two majors, music industry/history and English. Mad currently creates music and content whenever he can find the time for it.