Complex sentence: But, "Harakiri" also differs from other previous releases as all songs featured in it were written on Tankian's iPad but also as a mixing tool for three songs on the record.
Split into simpler sentences: But, "Harakiri" also differs from other previous releases as all songs featured in it were written on Tankian's iPad. In addition to this, the device was also used as a mixing tool for three songs on the record.