Complex sentence: Harold Arlen (February 15,1905--April 23,1986) was an American composer of popular music, having written over 500 songs, a number of which have become known the world over.
Split into simpler sentences: Harold Arlen (February 15,1905--April 23,1986) was an American composer of popular music. Having written over 500 songs, a number of which have become known the world over.