When the Beatles cut old rock n' roll, they were recording music still in their performing repertoire, and besides, they never thought of the music as old.

Bob Dylan has always sealed his decisions with the unexplainable. His motives for withholding the release of the magnificent 'Basement Tapes' will be as forever obscure as Brian Wilson's reasons for the destruction of the tapes for 'Smile.'

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.

James Taylor may be an all-American boy but he isn't Horatio Alger, and the lionizing of many rock stars by the rock press has as much to do with old fashioned rags-to-riches stories as does the straight culture's deification of its idols.

Carole King's second album, 'Tapestry,' has fulfilled the promise of her first and confirmed the fact that she is one of the most creative figures in all of pop music. It is an album of surpassing personal-intimacy and musical accomplishment and a work infused with a sense of artistic purpose. It is also easy to listen to and easy to enjoy.

'Sing It Again Rod' touches all the solo bases since Stewart's departure from the Jeff Beck Band, wherein he cut his teeth on American audiences for $75 a week plus expenses, and wisely ignores his generally inferior work with the Faces.

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.