From the site:
“While Colonel Parker arranged his Vegas resurrection, Elvis went back into the recording studio determined to again produce quality records and catapult himself out of both his banal movies and the bland music that had stifled him for years. And he turned away from RCA’s Nashville studio and toward his home town, Memphis, where he had broken musical barriers at Sun Records fifteen years earlier. He cast his eye on the small American Sound Studio run by producer Chips Moman, which had been turning out hits for various labels and had access to top musicians and songwriters. It was all too alluring for Elvis to pass up and offered just what he wanted—a break from his past and a return to his roots. Elvis began a ten-day session with Moman at American on January 13, 1969, with the buzz over what was quickly being called the ‘Comeback’ TV special still very much in the air. Elvis was determined to make good his vow to Steve Binder to take the reins of his career.