The median age group of our congregation is 68. Our current congregation size is about 450, and the youth can be counted on two hands. We tried a Saturday evening service years ago and had less than 10 people show up for services - then we tried to attract more youth with a contemporary worship format ... it did not attract any young people, even after a two year run.
What we have going now is two worship offerings on Sunday mornings:
1. Traditional (high church) Liturgical (CT64's version of bells and smells).
2. Convergent Worship where we combine toned down traditional with contemporary, and eliminate all the bells and smells.
So far, that seems to be working with a combined average attendance for both services at around 335. It will drop dramatically towards the end of April when all the snowbirds leave for home ... they winter here and leave before the blast furnace hot summers.
About the most "rocking" hymn we have done with any success is Leaning On The Everlasting Arms ... sans the happy clappy clapping and yelling "amen, brother" and such.
Traditional music has been a stalwart for our congregation since day one back in 1963. We are still the ONLY Lutheran congregation, in all of Tucson, with a 100% pipe organ being used for worship services, an honor we have had since 1979 when our Möller was installed. My Pastor loves the organ and all its literature, especially that of the old masters like Bach, Buxtehude, Pachelbel, etc.