In reading through the Songs of Ascents this month, this book was a great help in understanding the historical, geographical and Biblical context of these Psalms. And the connection of these Psalms with the events described elsewhere in Scripture was of great benefit. These songs have so much more depth of meaning than I realized.
To me, the connection of these songs to liturgy within the church calendar only heightened the importance of understanding these Psalms.
This book is a great companion to any study of these Psalms.