 Norman Petty had been Buddy Holly's main recording producer and after Holly's death obtained the rights to Holly's early rehearsal and home demo recordings.From May 1962 until August 1968, Petty had the Fireballs overdub the Holly material, making them the band he never knew he had though the band had met Holly at Petty's studio in 1957.The overdubs were originally released on four albums of "new" Holly material throughout the 1960s with four of the efforts released as singles charting.