Do you believe in the Lutheran approach to worship (whatever is not explicitly forbidden in the Bible is acceptable) or the Reformed approach (only worship as commanded in God's Word)?

Like Cain, who sought to bring an offering to God, but in the wrong way, Churches are under the false impression that as long as they are not doing something that is condemned in the Word, as long as they are lead by what they think are appropriate motivations, there is no limit as to what they may do. But God does not leave it up to us to decide how we are to worship Him. We are regulated by the Word of God in our worship. Many miss the theological relationship that exists between sola scriptura and the regulative principle of worship. However, the regulative principle of worship is directly related to sola scriptura doctrines (i.e. infallibility, absolute authority, sufficiency and perfection of Scripture). Sola scriptura teaches that the Bible regulates all of life—this includes worship.

The 1st commandment expresses the principle that we may not worship any other god than the LORD. The 2nd commandment articulates how we worship whom we must. It lays down the principle that we are to worship God in the manner God stipulates. When Israel worshipped the golden calf, they expressly affirmed they were not violating the 1st commandment (worshipping other gods), however they were violating the 2nd commandment (in a way other than how God had commanded). Saul decided to worship God the way he desired and failed to wait on Samuel. We could also speak of Uzziah offering God the service of reaching out his hand to steady the ark when it was in danger of falling and then being smitten to death. In 2 Chronicles 30, Hezekiah gave a worship service to God in Jerusalem, which consisted of observance of the Passover. However, he blew it because many had not kept the ceremonial rules of cleansing themselves. Good intentions are not enough. The positive implication of the 2nd commandment is that God –and God alone– will determine how we must worship Him (compare: Heidelberg Catechism, Lord's Day 35, the WCF, XXI, and the WLC, 109).

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Martin Bucer says, 'it is only the worship which God asks of us which really serves Him.' Bucer obviously did not understand worship as though it were some sort of creative art, as though the object of worship were to entertain God with elaborate liturgical pageants and dramas. God directs us above all to worship him by the proclamation of his word, the giving of alms, the celebration of communion, and the ministry of prayer.

Cooperate Worship in the Reformed Tradition, by Hughes Oliphant Olds
Thus, though I think that you would concur that worship includes what Olds/Bucer reveals above, what type of music is truly “reverent?” Luther says something of interest (not necessarily correct) here,

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I have been hesitant and fearful [to change the liturgy] partly because of the weak in faith, who cannot suddenly exchange an old and accustomed order of worship for a new and unusual one, and more so because of the fickle and fastidious spirits who rush in like unclean swine without faith or reason, and who delight only in novelty and tire of it as quickly when it has worn off. Such people are a nuisance even in other affairs, but in spiritual matters, they are absolutely unbearable. Nonetheless, at the risk of bursting with anger, I must bear with them, unless I want to let the gospel itself be denied to the people.

Luther’s Works, Volume 53
Thus, what songs and music are acceptable by your standards and how do they compare to the Word of God? Would you give us an example (names of songs, artists, tempo, beat, rhythm, etc.) of modern music that you consider to be included in "biblical worship?"

PS: anyone may answer these questions, not just Puritan.

Reformed and Always Reforming,