Complex sentence: They had several hit records, including the million selling single "Bend Me, Shape Me" in 1967-1968 and two other top 20 Billboard singles "Green Light" and "Step out of your Mind" and other top 100 hits.
Split into simpler sentences: They had several hit records including the million selling single "Bend Me, Shape Me" in' 68. Also, they had two other top 20 Billboard singles "Green Light" and "Step out of your Mind" and other top 100 hits.