Complex sentence: The Groop returned to Australia by October 1968 and Ross left, they released two more singles, but only "Such A Lovely Way" reached the national top 20 before they disbanded in May 1969.
Split into simpler sentences: The Groop returned to Australia by October 1968 and Ross left the band. They released two more singles, but only "Such A Lovely Way" reached the national top 20 before they disbanded in May 1969.