The Preservation Resource Center of New Orleans is placing a memorial plaque on the former home of singer-pianist Professor Longhair. The official dedication and unveiling will take place at 4:30 p.m., Wednesday, April 29, at 1738-40 Terpsichore Street.

The event, free and open to the public, will feature music from 1 p.m. to 6 p.m. inside the Professor Longhair Museum and on Terpsichore Street, which will be closed to traffic. Musicians include piano players Marcia Ball, Armand St. Martin, Claude Bryant, Al Farrell, John Autin, Tom Worrell, Sherman Bernard and others.

Other performers include James Jordan and the Beautiful Band (2 p.m.) and The Gentilly Brass Band with members of the Bucktown All-Stars (3:30 p.m.). Mardi Gras Indians Kevin Goodman, chief of the Flaming Arrows, and Spyboy Leroy will also appear. Guests include J. Monque’d.

Since 2002, the Preservation Resource Center and New Orleans Jazz Commission have worked to identify and commemorate the former homes of influential musicians through the installation of historic markers. More than 60 markers have been placed throughout the city. More than 500 sites have been identified.

Longhair’s former home is now a museum dedicated to him and the home of his daughter, Pat Byrd. It was renovated in 2014 by Project Homecoming, Tipitina’s Foundation and United Way. A documentary about Longhair, “Making a Gumbo,” is currently in production.