While the name Sam Phillips is synonymous with the careers of Elvis Presley, Jerry Lee Lewis, Roy Orbison and Johnny Cash, the strength of tonight’s flick is that it goes beyond the biggest names on Sun Records’ roster in defining label owner/producer Sam Phillips’ place in the rock pantheon. Written by the Vanderbilt English Department’s Writer in Residence and legendary music historian Peter Guralnick, this documentary also illuminates the pre-Elvis days at Sun, when Phillips was recording music for black audiences by black artists like Howlin’ Wolf, Rufus Thomas and Ike Turner. It was Turner’s Kings of Rhythm who recorded “Rocket 88” for Phillips in 1951. The song is now widely considered to be the first rock record. This event is rescheduled from Feb. 9, when the film was slated to screen at Sarratt Cinema but postponed due to inclement weather. The screening will be accompanied by a signing and discussion from Guralnick.