Great disscussion Guys and Gals. I myself am a Worship leader at church and I Lead from the keyboard. I have been in some groups where in knew I was better than the rest of them, and it showed, and in those instances I was turned way down cause human feelings got involved. Never operate in a ministry with feeling cause they are due to change at any second.  I have alwayed tried to take the low seat as the bible says and your giftings will make room for you. Now with that said I always try to give the band players and singers a time to shine, because I know as a leader that there's more giftings on stage than just my own so as a leader I want to Have the body of christ operating to its full capacity. What we hear on stage is not always what the audience hears. Always take time with your sound man and convey what you need as far as sound in your monitor. My drummer needs more keys, where the bass wants more bass drum in his monitor and so forth. Its your sound mans job to mix the music for the audience to enjoy and worship to. Just remember that we are serving the Lord in our abilities and talents and to not have no other agenda on our mind. And always talk to your worship leaders and tell them whats the problem cause they are not above you but they are with you and if they think they are above you then they need to be checked by you and by the pastor. Humble thyself in the sight of the Lord. Its all about the Lord!!! 

The music should blend as one instrument as the voices should blend as one voice, but also be heard seperately as well. If one of my instruments fall out or someone quits singing  I know it immediatly cause there is a void in the music. Thats when sound is run right.....