then he remembered what had happened at the weekend. On Saturday afternoon his new car had disappeared from the road in front of his house. Sam called the police but ten minutes later his brother drove up.
South London called Broadway Sound. Early on the morning of August 12th 1982 the band, comprising of Colin Swan, Geno Buckmaster, Brian Grover and their trusty roadie ‘Robbo’ assembled at the tiny studio to begin recording as many of their songs as they could get down on tape for the tiny budget they had scraped together. As most of the songs were already well rehearsed thanks to the band’s busy live schedule, the recording of the first nine songs on this disc were finished by mid afternoon without any problems.
I don't see any differences in these two examples. My question is why the second one is past simple .I have tried to compare them . Here is the result of my comparison
Both are about events that took place before, both are easy to understand that they took place before (even for the first one without using past perfect ), both are causes (the car had been stolen so he called the police the song had been already well rehearsed so the disc was finished early )and both seems to be completed so what and where is the difference