Know-How Exchange : Taglines/Names

I'm guessing that you're looking for a headline for an invitation, rather than a tagline for your fundraising event/business. The tag/headline alone won't suddenly change your crowd. Your event title itself gives the feeling of "hard rock", so trying to convince people that the name is wrong might be a bit tricky. As a minimum, in your marketing, consider showing images of people of all ages enjoying themselves from years past.

"From Big Band To Modern Rock - Dance To It All"
"Dance To Music From Yesteryear to Today"

Ok, your question is two fold. First a tagline and 2nd ,how to attract a younger audience.

Your older crowd understands giving back, the younger crowd you'll have to educate. They will go for the fun.

A fundraiser I went to that did this the best i've seen first had traditional dancing with a large "big band"-- think 50's. They hired (as a lot of these events do) dance professionals to get people on the floor. My husband and I love that era, but an eve of it was draining on us. Just when I was about to say "i'm getting bored" they switched to a very contemporary group and music.

What was so cool is we had people 80 years old coming up to us (trained in ball room dance) asking "what is that". And they were dancing with the younger crowd having the time of their life. There was something there for everyone. And it was (and always is) sold out.

Jay is on the right track acknowledging the mix. But I am thinking it should be in the lingo of the younger crowd. But not so young that it turns off your older crowd. My logic is an older person wants to understand the ways of the young. But it's not vice versa. You're almost there with the play on the Hard Rock Cafe.

Club Temple Rock

Temple Rock Rocks

Rock the Temple

Temple in the House

I would also hope your band has a following. That will help. And no matter your tagline, you are going to have to reach out to those young people in other ways.

My idea is to have a photo booth or mock photo booth and play that angle up on the invitation. They do this at weddings and younger people go nuts for it. Get some small chalkboards (you can find cool word bubble shaped ones on Etsy.com) and allow people who get photographed to write a saying on the board and have their picture taken.

Then, on the invitation for Temple Rock Cafe, put a photo of a couple of people holding up these word bubbles and write a couple of band names on them according to their age group (an older person can have "Jerry Lee Lewis" and the younger person can have "Michael Jackson" for example). Tagline can be "Shimmy, Shake and Say Cheese at the Temple Rock Cafe" or something of the like...