Complex sentence: It marked a stylistic return to Heart's melodic hard rock and folk sound of their early albums, and peaked at number 10 on the "Billboard" 200, becoming the group's first top 10 album in 20 years.
Split into simpler sentences: It marked a stylistic return to Heart's melodic hard rock and folk sound of their early albums,. The album peaked at number 10 on the "Billboard" 200, becoming the group's first top 10 album in 20 years.