premise: Green Day's final album with Lookout Records was Kerplunk.
hypothesis: Green Day . For much of the group 's career , the band has been a trio with drummer Tré Cool , who replaced former drummer John Kiffmeyer in 1990 prior to the recording of the band 's second studio album , Kerplunk ( 1991 ) . The band 's early releases were with the independent record label Lookout !