Base was the first EP by the singer-songwriter from which boy band?
Base (EP): Base is the first EP of Korean boy band Shinee member Jonghyun, released on January 12, 2015 by S.M. Entertainment. Kim Jong-hyun (singer): Kim Jong-hyun (born April 8, 1990), better known by the mononym Jonghyun, is a South Korean singer-songwriter, and radio host. Kim Jong-hyun (singer):  He is a vocalist of the South Korean boy group Shinee, and has further participated in S.M. Entertainment's project group S.M.
Shinee