A Contemporary Case for Exclusive Psalmody:  The Songs of Zion by Michael Bushell is fascinating!  At the very least one will come away from reading it with a renewed appreciation for singing the psalms.  In our family worship times we sing from the Trinity Psalter.  It is such a blessing to be driving down the road and hear my children singing the psalms they have memorized.  Click on my Psalms Cds link to find psalm singing materials.