A cappella is music without instrumental accompaniment, and sophomore Jabari Tovar provides all the vocal percussion.
The group has performed at Salem High music department concerts and Marblehead High School's "Acappellooza" in April and sang the national anthem at a Boston Breakers soccer game.
Friday's concert will mark the group's first solo event.
The other members of WitchPitch? are Adelaide Majeski, Tom Regan, Brianna Cruddas, Allison Lawrence, David Karam, Drew Hammond, Craig Simonetti, Renee Loughe, Emily Kent, Joe Forristall, Nate Bertone and Meryl Schultz.
Want to go?
Salem High School a cappella concert
What: WitchPitch? Goes Green
When: Friday, 7 p.m.
Where: Salem High School auditorium, 77 Willson St.
Cost: $5 suggested donation
Benefits: 25 percent of concert proceeds will be donated to Salem Sound Coastwatch