We say in Yishtabach, (ישתבח) He who chooses songs of praise, mighty King, life of the world. We say in the second of Birchot Shemah, (אהבת עולם) Blessed is HaShem, who chooses his nation Yisrael with love.
Clearly, Bnei Yisrael are the songs of praise mentioned in Yishtabach. Any Doubts? ישראל is an anagram of שיר אל - song of God.