We prefer to call it the "music team" or "praise band," but this is normal in Protestant churches.
it really isn't
My parents' church has a band and it's a Lutheran one.
I don't want to dismiss your methods of worship, because if it works for you that is good; its just that I cannot fathom having a band as the source of music in my church. Coming from the Benedictine Catholic background where I sang Gregorian chant in the choir, if a band came into my church I would hightail it elsewhere. To each his own of course, but I am going to stick with my organ based music in church.
I can deal with piano and in some cases trumpet as long as the music itself is decent, and there's something really warm and intimate about unaccompanied singing, but a band is where I draw the line too.
I really enjoy a number of modern Protestant megachurch bands, but I'd never want that in a mass.
The best Novus Ordo mass I've been to was an Easter Vigil where they had trumpets and a violin. It was beautifully done. I don't even mind a guitar that much if it's used tastefully, but some people have a violent, visceral reaction against them.
