Anything short of the gospel does not belong in a worship service. Even the prayers should be filled with the gospel. It is amazing what the gospel will do for men when it is the sum and substance of their worship. Let worship have life. This life is not the artificial kind mentioned before, but is that warmth with which the Spirit of God often stirs in the hearts of true worshippers.
Deliberate deadness is as bad or worse than false enthusiasm.
The truly grateful heart speaks forth with exhuberant praise - but with genuineness. The tunes need not be difficult nor somber. The words need not be laborious to pronounce or understand. The spirit need not be morose nor subdued. Let the worship of God go uninterrupted from start to finish.