Joan Jett, Billy Joel, LL Cool J and Louis Armstrong showcased in new Long Island Music & Entertainment Hall of Fame

Long Island Sound has taken on a new meaning.

A new exhibition space celebrating the likes of Joan Jett, Billy Joel, LL Cool J and Louis Armstrong and other Long Island music stars has opened after more than a decade in the works.

The Long Island Music & Entertainment Hall of Fame, located in Stony Brook, welcomed its first guests on Friday afternoon, paying homage to the achievements of the local kids who done good.

“This is unbelievable, we’ve probably had a couple of hundred people who have been streaming in all day,” the Hall’s chairman Ernie Canadeo told the Daily News. “I’m very excited, and what we’ve built here, I think people will be shocked.”

The former RCA Records executive said he’s worked to have a permanent home for memorabilia related to more than 120 artists and professionals since 2004. A wide swath of musicians made the cut, even if some aren’t exactly true Long Islanders.

Acts such as rap trailblazers Run DMC, formed in Queens, Bedford Stuyvesant-born rock icon Richie Havens, ‘80s pop teen idol Debbie Gibson (born in Brooklyn) and jazz great Armstrong, originally from Queens, qualified to be inducted in the Hall of Fame, Canadeo said.

“We look at Long Island in the geographic sense, so that includes Brooklyn, Queens, Nassau and Suffolk counties,” Canadeo said. “Everyone in the Hall of Fame is from Long Island, and we cover every musical genre. So we go back to Count Basie, Louie Armstrong, Guy Lombardo, Perry Como, Twisted Sister, Run DMC and Public Enemy. We proudly represent a very first group of artists.”

The 8,800-square-foot two-story space features displays of original musical instruments, awards, performance outfits, vintage automobiles belonging to musicians and other artifacts donated by the artists and their estates.

The Hall’s first exhibition, “Long Island’s Legendary Club Scene — 1960′s-1980′s,” is designed to be “a club crawl” through the era. Created by School of Visual Arts educator Kevin O’Callaghan — who crafted MTV Movie Awards’ “popcorn” trophy — the exhibition is designed to transport visitors to the days when rock groups such as Blue Oyster Cult, Zebra and Twisted Sister made their mark.

“Our feeling is that everyone likes to look back to the youth and this brings you back,” Canadeo said. “If you’re of a certain age, and you’re walking around, you’re seeing the bands that you used to see in costumes ... and things that were happening. It’s a real time capsule of the club scene from those days.”

Jett, the “I Love Rock ‘n Roll” powerhouse and longtime resident of Long Beach (though born in Wynnewood, Pa.), donated her first car, a 1983 Jaguar that’s on display.

Joel is a native of the Bronx who grew up in Hicksville. The “New York State of Mind” crooner donated his 1981 Harley Davidson Heritage Edition motorcycle.

“No one has really acknowledged the major impact that Long Island has truly had on the world,” Canadeo said. “And there’s no place in the world that has created so much musical talent.”