 For reasons unknown, several of Elvis songs are slightly sped up,  making his voice sound higher than usual. This is most noticeable on  the title track. This error appears to have originated in the  recording studio, as the RCA soundtrack album retains the sped up  versions of the songs. A recording of "Girl Happy", mastered at the  proper speed, would not be released until the 1990s. The explanation  came afterwards that it was intentional and that it was supposed to  give the title track an upbeat feeling that it lacked apparently in  the original version. It has to be reminded that this soundtrack was  recorded at the height of the Beatlemania in June 1964 and that the  record company tried to give some "extra