My worship band at church is quite 'heavy' with lot's of energetic music. Even a lot of older people like it. We also have other worship bands that play different styles so there is something for everyone. I don't believe that saying that the guitar and drums are from the devil. Like William Booth said a long time ago... 'why should the devil have all the good music?'
Good is after all a very subjective term in relation to music. Purity and holiness are virtues sought for in Christ.
For the cause of Christ
Roger