Kesha may be most popular for her dirty girl antics, her glitter bombs and her condom canons, but underneath all the electric blue eyeliner and sassy talk is a bit of a humanitarian. Kesha is motivating fans to do something good for her Nashville hometown this summer by offering a concert ticket for her July 31 show (at the Municipal Auditorium in Music City) to those who register here and complete a volunteer service project on the Hands On Nashville Project Calendar.

"When I was growing up in Nashville I always had to sneak into shows, but I want to give you an opportunity to come for free. All you have to do is just help out our hometown. Sign up right now so we can party and I can’t wait to see you guys on the 31st of July!" the singer said in a statement.

Here's some info if you are based in Nashville and want to help and score your free ticket. Volunteers must complete service between now and July 24, 2011 and there is a limited quantity of tickets available, so you are encouraged to act on the quick and to register immediately. Only one ticket is provided to each volunteer. Fans must be 10 or older to participate.

Do something for Nashville and then enjoy Kesha in concert next month. It's a win-win.