I would advise lifting the music ministry up in prayer first and seeking God's will in the situation. After praying and hearing from God, you may wish to address your concerns and observations with the music ministry adults. You are correct to be concerned about the children because they are taking their cues from the adults. If we believe that God is who His word says He is, then He will surely work it out. In the meantime, purpose in your mind that you will praise God with your talent and trust that others will take your cue as God deals and speaks with them. Be sure that you have heard from the Lord before you make a decision to leave or not. Sometimes God allows situations that may be trying for us, but we know that if we persevere we are assured the victory. Who knows, you may be the vessel that God will use to lift your church's music ministry to the next level in Him. You may wish to lead the group in prayer before rehearsals and set the atmosphere for a productive and blessed time. The Word never fails!!!! We will keep you and your ministry in prayer.
Blessed
crazybass (NYC)