I'm forever amused by christians. When it comes to mosaic laws in OT which hinder their lifestyles (such as circumcision, not eating pork, fasting, etc etc), they would say "oh, when jesus died, it abrograted the mosaic laws so we are not supposed to observe them". But when it fancies them, although it is only in their OT and jesus did not observe it, they quickly say "oh, but david did it, so we can do it too". which I find staggering. Christians believe jesus is god, and do they not want to pray and worship in the same way of their god?
But No, and now because christians today want to use instrumental music in their worship they point out to david who according to OT use instrumental music (which I dont think it's true, based on the Quran), while Jesus definitely never used instrumental music in his worship, and it seems he sang hymns in the same manner of a muslim reciting quran.