Complex sentence: In 1990, Smith released "Go West Young Man", his first mainstream effort, including the mainstream crossover hit "Place in This World," which peaked at No.6 on the Billboard Hot 100.
Split into simpler sentences: In 1990, Smith released "Go West Young Man", his first mainstream effort, which included the mainstream crossover hit single "Place in This World". The song peaked at No.6 on the Billboard Hot 100.