William Patrick Corgan Jr. (born March 17, 1967) is an American singer, guitarist, songwriter, and professional wrestling promoter. He is best known as the co-founder, lead guitarist, primary songwriter, singer, and only constant member of alternative rock band The Smashing Pumpkins. Corgan is credited with helping popularize the alt rock genre. He has also been the owner and promoter of the National Wrestling Alliance since 2017. Corgan formed the Smashing Pumpkins in Chicago in 1988 alongside guitarist James Iha, with bassist D'arcy Wretzky and drummer Jimmy Chamberlin joining soon after.
https://en.wikipedia.org/wiki/Billy_Corgan