The idea of attracting the young is fine, but the problem is how.
I am speaking of the RC church, but protestant friends tell me that they have the same problem. The young do not seem to be attracted by the "music group" style of worship which seems to many to be based on 1960s pop. Contemporary pop idiom does not carry religious sentiments at all well, and young people often agree with this view. They are content with traditional church music, which they sum up with the sentiment "at least you know you're in church".
The catholic chaplaincies at Oxford and Cambridge, which thirty years ago were guitar dominated, now have organs, gregorian chant and polyphony. However, local parishes are dominated by people who pushed guitars to the front in their youth, are now in their sixties, who will not accept that the music which attracted them in their youth no longer attracts young people.
I always try to ask the children what they like in church music, and the answer seems to be not much, but it does have to be loud. They do like "Woodlands" and "Cwm Rhondda." Does anyone know of anything else ten year olds actually admit to liking?