"The more people the better," Morningstar said. "It's for a great cause."
The show will run from noon to 8 p.m. Tickets cost $5 in advance and $8 at the door.
The following bands will perform: Black Market Radio, Fosterchild, Vestascension, Since, Half Link, Seventh Seal, No Remorse and Simple & Supreem.
Gosnell said each of the bands plays rock music, but each was selected because they play a different type of rock music.
"It's really something for everyone," he said.
Black Market Radio and Fosterchild are probably the most recognizable and nationally known bands on the roster, Gosnell said.
Black Market Radio is a New York band that recently opened for Collective Soul. The lead singer, Peter Cornell, is the brother of Chris Cornell, a member of Audioslave and Soundgarden.
Keith Mandino, another member of BMR, is the bassist for Lenny Kravitz.
Fosterchild is a Philadelphia, Pa., band, and the drummer, Kevin Miller, is a former member of Fuel.
Gosnell said the concert has taken months of planning, but finding bands willing to play was easy. All he had to do was ask.
The bands and those who have already purchased tickets were enthusiastic about the cause, he said.
"Jon used to get chased out of places skateboarding," said Robert Barrett, Jonathan Barnes' stepfather. "(The skateboarding park) will give kids something to do. That's why we're trying to get this whole thing going."
Jonathan's mother, Carole, said she will be at the benefit and will be selling a line of skateboards called BAD - the first letter of each boy's last name. T-shirts and stickers with the logo will also be available, and all proceeds will benefit the skate park, she said.
The Barretts said they were contacted by the Tony Hawk Foundation, which was eager to help them with the skate park. The foundation provided a list of steps outlining the necessary process to have one built and might also provide some grant money in the future, they said.
If you go
What: Rock For a Reason
When: April 9, noon to 8 p.m.
Where: The Nest at Stinger's Sports Pub & Grill, 7704 Old National Pike, Boonsboro
Tickets cost $5 in advance and $8 at the door