Tambourines and cymbals are percussion.
Pianos and guitars are stringed instruments.
Get over yourselves.
No offense since I assume you play in the church band.... but I would be fine with churches having bands for special occasions like Christmas, Easter, summer festivals, youth camps, etc. But if an electrified band was part of the weekly service, I'd find a new church. For me, church should be solemn. Reverent. Anything outside an organ/piano would be too much for me.
What if God enjoys a gifted musician since God gives the gifts in the first place? Ethnodoxology is an emerging area of theology that FINALLY recognizes that while Christianity is a faith that has a very large experiential component (you feel it/you experience it deeply at times), everyone's doxology (worship) is cultural. Maybe you love the song Amazing Grace or maybe you enjoy a rappers worship in song and why can't one be just as worshipful as the other? Sure they can. In any church, there are differing generations, different ethnicities, and often different nationalities. A believer is challenged to mature if they think the way "they" like to sing or hear preaching is "the only truth, way, and life." It's not. Jesus is.
So, as long as the worship is Christian at its core doctrine..... BRING IT!
Christian churches all over the world worship every day in different ways and different styles to the God of the Bible.
The way most people who come to me and "tell me" how worship should be, I most often kindly remind them that most songs in our churches are not even 500 years old, and most are not 100 years old. The same grumbling happened the first time Amazing Grace was played.... people said, "I won't listen to that junk!"
See how times change and people haven't
If they come into God's church, love them. Not a little but a lot. Love 'em like you love yourself.
Love their worship style like you love yours.
As it is written.
And what an orchestra heaven should be!
Blessings,
Mark