'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.

Often, equipment can as easily function as a security blanket for musicians unwilling or unable to risk anything personal in the studio. Whether one catches the feeling on a record is a subjective matter. How can you be sure? The machinery can hold out the promise of at least mechanical perfection.

As a performing group, the Beatles began by playing old rock favorites, for dancing, to tough audiences in Liverpool and Hamburg. When they began writing seriously, they discovered that they couldn't compose in the early American rock tradition.

Elton John can be a master of the sleight of hand. The arrangements make it seem like there are substantial melodies underneath the tracks - but almost nothing demands repeated listenings. Similarly, he always sounds like he's singing up a storm, but his voice glosses over the material, reducing most things to an uninteresting sameness.

On first listening, Joni Mitchell's 'Court And Spark,' the first truly great pop album of 1974, sounds surprisingly light; by the third or fourth listening, it reveals its underlying tensions.

Bob Dylan may be the Charlie Chaplin of rock n' roll. Both men are regarded as geniuses by their entire audience. Both were proclaimed revolutionaries for their early work and subjected to exhaustive attack when later works were thought to be inferior. Both developed their art without so much as a nodding glance toward their peers.