“The lead vocalist (or main vocalist, lead vocals or lead singer) in popular music is typically the member of a group or band whose voice is the most prominent in a performance where multiple voices may be heard.  The lead singer either leads the vocal ensemble or sets against the ensemble as the dominant sound.  In vocal group performances, notably in soul and gospel music, and early rock and roll, the lead singer takes the main vocal part, with a chorus provided by other band members as backing vocalists.”
Wikipedia 

(Excerpts from my presentation at CAC True Worshippers Symposium in Luton. Sept 2017.) Credit: Dreamstime 1 Corinthians 14.15 speaks best to what the heart of Voice in Ministry : "...I will sing in the Spirit, and I will sing with understanding also." I cannot claim I got this scripture by inspiration or through my own research. Actually, someone else used this scripture as the sub title for their workshop, which a colleague was teaching at. When i read it, it immediately struck me: YES! Yes,yes,yes!  That is it. That is what I wanted to say for the past 10 years but could not articulate: Sing, but do it with understanding. The Amplified Bible goes further:"...I will sing with my spirit [by Holy Spirit that is within me],but I will sing [intelligently] with my mind and understanding." Ok. Hold that thought. Let me bring in my other foundation scripture as the two goes together nicely. 1 Chronicles 15:22 says: "Chenaniah, leader of the Levites in singing, was put in charge of carrying the ark and lifting up song. He instructed about these matters because he was skilled and able." (AMP) The four words that bring these two passages together are: intelligently, understanding, skilled and able. All these four words are intertwined and guide us towards the same goal that as worship leader and vocalist, we are to be good at what we do.       'Good' meaning knowledgeable, trained and experienced. (Sidenote: Notice that I did not say excellent and I did not say perfect. Whilst excellence is an aim, it is not the minimum requirement to lead and sing. 'Good and Competent' surely has to be the minimum. And whilst perfection is highly desirous, it is, alas, unobtainable, although this should not deter from wanting to develop and aim to give God our best.)  Like any other instrument of worship, the voice benefits from training, practice, and skillfulness. 1 Cor 14:15 suggests 'sing with understanding' means sing knowing what you are doing; with awareness and comprehending the words you are saying. With this in mind, it can be equally applied to the act of singing; the function of the voice and how it is used as an instrument. You could sum it up as following: ​The action of singing requires awareness and comprehension; developing skill, technique,understanding and ability. Only then, as 1 Chronicles 15:22 reveals, can one lead vocally(sing) and be in charge! Voice in Ministry exists to support worship leaders and worshippers in taking charge of their voice, singing with understanding, in a spirit of excellence. Finally I quote Isaiah Raymond Dyer

EVERY Skill should POINT to the Giver of the gift, ability and agility and should
​cause HIS impact to run through ours lives!"       Amen!!!!! ​​