Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Let's Have a Party is the debut album by the American rock band the Rivieras released in 1964 by USA Records. This album contains the band's biggest hit, "California Sun", which reached number five on the Billboard Hot 100 chart. The album continues the band's popular surf style, and contains covers of classic and contemporary rock and roll hits. The album's title track is a cover of Elvis Presley's "Let's Have a Party", written by Jessie Mae Robinson.
The album was reissued in Sweden in 1967 with the name California Sun!! by Sonet and Grand Prix Records. Another album sharing the title Let's Have a Party was released in Sweden in 1989 by Star-Club Records, but features an entirely different track listing; Side A is non-LP single tracks, and Side B has tracks from Campus Party. All tracks from Let's Have a Party were later compiled onto California Sun: The Best of the Rivieras in 2000.
Background
With the band's newfound success with "California Sun", the Rivieras set out to record a full-length effort in February 1964 at Chicago's Columbia Recording Studios ("California Sun" was previously recorded in July 1963). While "California Sun" had become the band's biggest hit at this point, the band's original singer, Marty Fortson and guitarist, Joe Pennell had both left for the Marines. By the time of recording, they had been replaced by Bill Dobslaw and Jim Boal, respectively. Fortson and Pennell are uncredited for their contributions on "California Sun". Dobslaw aside, all members of the band were currently attending high school in South Bend, Indiana by the time of the album's release.