Complex sentence: The track "Slowly" became the last song written by Benny Andersson and Björn Ulvaeus to be recorded by either of ABBA's female vocalists to date.
Split into simpler sentences: The track "Slowly" was written by Benny Andersson and Björn Ulvaeus of Abba. This song is also the last song written by the Abba-composers to be recorded by either of ABBA's female vocalists to date.