Complex sentence: He had a very high and distinctive falsetto voice and managed to notch up chart hits for the Chapter One label, including "Sally", a song first made popular by Gracie Fields in the 1930s.
Split into simpler sentences: He had a very high and distinctive voice and managed to notch up chart hits for the Chapter One label, including "Sally". His cover version of the song, "Sally", was first made popular by Gracie Fields in the 1930s.