Complex sentence: "Eagle" was written by Benny Andersson and Björn Ulvaeus, with Agnetha Faltskog and Anni-Frid Lyngstad sharing the lead vocals.
Split into simpler sentences: Eagle was written by Benny Andersson and Björn Ulvaeus. Agnetha Fältskog and Anni-Frid Lyngstad shared the lead vocals.