'Let's Get It On' is a classic Motown single, endlessly repeatable and always enjoyable.

As long as Elton John can bring forth one performance per album on the order of 'Someone Saved My Life Tonight,' the chance remains that he will become something more than the great entertainer he already is and go on to make a lasting contribution to rock.

Aretha Franklin's 'Let Me in Your Life' is one of the few recent R&B albums that places the emphasis entirely and deservedly on a voice. Many R&B producers have been making records on which the singer is outshined by the song, the arrangement and the sound.

The modern recording studio, with its well-trained engineers, 24-track machines and shiny new recording consoles, encourages the artist to get involved with sound. And there have always been artists who could make the equipment serve their needs in a highly personal way - I would single out the Beatles, Phil Spector, the Beach Boys and Thom Bell.

Everyone eventually winds up writing about themselves - the problem is finding the best way to go about it. To write about oneself literally, in the first person, presumes a more interesting personal life and philosophy than most rock lyricists possess. John Lennon was good for one great album based on musical direct address, 'Plastic Ono Band.

'Call Me' is not an exceptional Al Green album, but it is as solid as a rock at its center.

Atlantic's Jerry Wexler believes first-rate records are made by first-rate voices. He certainly has worked with enough of them: Clyde McPhatter, Joe Turner, La Vern Baker, Ray Charles, Otis Redding, Solomon Burke, Wilson Pickett and Aretha Franklin.