Complex sentence: In September 2013, it was announced that the band would release two separate compilations in November 2013: a greatest hits album entitled "Three Sixty", containing one new song, "By and Down"; and a box-set entitled'.
Split into simpler sentences: In September 2013, it was announced that the band would release two separate compilations in November 2013. The first will be a greatest hits album entitled "Three Sixty", containing one new song, "By and Down", the second a box-set entitled'.