Related to the topic, I think it needs to be mentioned Hosea 6:6
King James Bible
For I desired mercy, and not sacrifice; and the knowledge of God more than burnt offerings.
Jamieson-Fausset-Brown Bible Commentary
6. mercy—put for piety in general, of which mercy or charity is a branch.
not sacrifice—that is, "rather than sacrifice." So "not" is merely comparative (Ex 16:8; Joe 2:13; Joh 6:27; 1Ti 2:14). As God Himself instituted sacrifices, it cannot mean that He desired them not absolutely, but that even in the Old Testament, He valued
moral obedience as the only end for which positive ordinances, such as sacrifices, were instituted—
as of more importance than a mere
external ritual obedience (1Sa 15:22; Ps 50:8, 9; 51:16; Isa 1:11, 12; Mic 6:6-8; Mt 9:13; 12:7).
knowledge of God—
experimental and practical, not merely theoretical (Ho 6:3; Jer 22:16; 1Jo 2:3, 4). "Mercy" refers to the second table of the law, our duty to our fellow man; "the knowledge of God" to the first table, our duty to God, including inward spiritual worship. The second table is put first, not as superior in dignity, for it is secondary, but in the order of our understanding.
http://biblehub.com/hosea/6-6.htm
my point: with or without musical instrument: which seems me to be external ritual obedience, a more important is moral obedience....