Psalm 150 as the Conclusion to the Psalter

In discussing how Psalm 150 serves as an apt conclusion to the Psalter, Edward Feld provides the following summary. 

And so it is with this orchestral symphony of praise that the book of Psalms ends. The book begins with a single individual, one person who is righteous, and ends with all that has God’s breath praising God. The book begins with the righteous person studying God’s word at home, at night, and ends with everyone in the temple singing together. At its best, the book has offered us words that connect us in our common humanity. Its recitation allows us to enter into a deeper reality that we may have known before. The book may have helped us to face our emptiness and find our way back to a world of blessing and thanksgiving. 

Edward Feld, Joy, Despair, and Hope: Reading Psalms (Eugene, OR: Cascade, 2013), 150.