This organ was the highest model in the HS range with 8 sections, The HS4 only had 4. The HS5 had 5, The HS6 had 6. The flexibility of the organ made it one of the most versatile organs of its time. The ability to write your own rhythms or edit your own sounds using the FM editor made it streets ahead of its competitors. Using similar technology designed for the world-class DX7 the HS8 is an awesome organ Not only is it an awesome organ but it controls expanders on 5 midi channels. So using an expander the sky is the limit.