The lineup of performers for the Free Friday Concert Series at Bo Diddley Plaza ranges from music more familiar to Boomers all the way to today’s hip hop, and a bit of sacred steel from the African-American gospel tradition.

Nigel Hamm, Bo Diddley Plaza coordinator, said the headliner for this year’s series, that began May 6 and runs through Oct. 21, is “The Leeboys,” a nationally known group based in Miami that plays a mix of gospel and soul.

The national headliner is The Leeboys Band, based out of Miami. Band leader Alvin Lee says their sound is called “sacred steel,” which is described as an inspired, unique form of gospel music with hard-driving-blues based beat music.

“The music genre is rooted in gospel, but infused with rhyme and blues, jazz, rock, funk, hip hop, country and ideas from another nations,” said Lee. “I’m hoping the audience instantly  recognize that this is not ‘sitting and listening music’: dancing, shouting out, and having fun are considered essential parts of our music. If we can touch one person through our music then our job is done.”