Simplify the following text for a Grade 11 native English-speaking person.
Original: Some time prior to recording , producer Jack Endino found old rolls of quarter-inch tape at a garage sale , and some contained recordings of a Christian preacher giving sermons in the early 1950s .
Simplified: Some time prior to recording , Endino found old rolls of quarter-inch tape at a garage sale , and some contained recordings of a Christian preacher giving sermons in the early 1950s .