Complex sentence: With Charles Stepney co-producing their album with Maurice "Flowers" was their first charting album since 1969 as it rose to number 5 on the R&B charts and has been certified gold in the US.
Split into simpler sentences: With Charles Stepney co-producing their album with Maurice, "Flowers" was their first charting album since 1969. It rose to number 5 on the R&B charts and has been certified gold in the US.