God, tells you to Praise him, that means on key, off key. praise his name. It might bother you, just asked the lord to help you, to deal with, Because they are doing what he wants, they don't need the prayer. When your singing to him, that is so personal to me as a christian, nothing should be on your mind but him. Pray to strengthen your relationship with God, Because he's telling my spirit that truly that's your detraction. Don't forget why your the workship leader, your true job is to make sure everyone is workshipping him, God doesn't pick or judge who does it better. Just WORKSHIP HIM. Have a blessed day! Stay in courage, don't forget what church is about, no one is perfect, he loves us despite all differences and flaws.