 41, and the T. Rex band identity was quickly re-established.The T. Rex album "Bolan's Zip Gun" (1975) was self-produced by Bolan who, in addition to writing the songs, gave his music a harder, more futuristic sheen.The final song recorded with Visconti, "Till Dawn", was re-recorded for "Bolan's Zip Gun" with Bolan at the controls.