Complex sentence: Produced by James William Guercio (then Chicago's producer), "Turnstiles" was first recorded at Caribou Ranch with members of Elton John's band; dissatisfied with the results, Joel re-recorded the songs and produced the album himself.
Split into simpler sentences: Produced by James William Guercio (then Chicago's producer), "Turnstiles" was first recorded at Caribou Ranch with members of Elton John's band. Dissatisfied with the result, Joel re-recorded the songs and produced the album himself.