Well never thought I'd see the day I could disagree with Pilgrim.I believe the point of psalm singing (only)is really purity of worship.You can enter my humble little church and you have nothing but the word of God sung.Christ is in the psalms so I cannot see the problem Pilgrim in many hymns there is no mention of Christ.Also with no instruments ALL present participate in the singing ,something I think does not happen so much in instrumental aided singing IMHO.