New Orleans — The Martin Luther King Jr. holiday is being observed in the metro area with events ranging from the 27th annual MLK Memorial March to a day of community service.

On Monday, an opening program will be held at 9 a.m. at City Hall, followed by the march, which follows a nearly 11/2 mile route from City Hall to the MLK Monument on South Claiborne Ave. and Felicity Street.

The City Year Martin Luther King National Day of Service will also take place Monday, beginning with volunteer registration at 8 a.m. at Arthur Ashe Charter School, 1465 Gardena Drive.

City Year New Orleans corps, Coach Across America, HandsON New Orleans, One Million Bones and the Oak Park Neighborhood Association will participate in the day of service projects sponsored by Cargill.

Volunteers will plant trees, paint planter boxes and build benches and picnic tables in what will be a one-acre teaching garden at Arthur Ashe.

Events honoring King actually began late last week, and they continue Saturday and Sunday.

The American Red Cross, community volunteers and the New Orleans Fire Department will canvass New Orleans neighborhoods Saturday with fire safety information, including the importance of smoke alarms.

On Sunday, a free community concert called “Lift Every Voice and Sing’’ will be held at 5 p.m. at the Ashe Cultural Arts Center, 1712 Oretha Castle Haley Blvd. Featured performers are the Rev. Lois Dejean, Golden Voices Community Choir, Michaela Harrison, Troy Henry, Sharon Martin, Monica McIntyre and Deacon John Moore.

Irvin Mayfield’s Jazz Playhouse at the Royal Sonesta will present the 4th annual Martin Luther King Jr. Jazz Awards at 7 p.m. Monday.

Honorees are Bob Brown, managing director for the Business Council of New Orleans; Rafael Delgadillo, outreach coordinator for Puentes New Orleans, Inc.; Sharon Clarke, Sophie B. Wright Charter School director; Clarke Peters, actor, musician and activist; Silas Lee, pollster; and the Rev. David Billings, anti-racism trainer and organizer for The People’s Institute.

A new honor, the Germaine Bazzle Award, will be presented to Joe Saulsbury, teacher and founder of Project Prodigy Summer Music Camp.

TV and radio host Tavis Smiley and Princeton philosophy professor Cornell West will present a free lecture at 7 p.m. Monday at the Lawless Memorial Chapel on the Dillard University Campus, 2601 Gentilly Blvd.

The two will answer questions and sign their new book, “The Rich and the Rest of Us: A Poverty Manifesto.

St. Paul’s Episcopal Church, 6249 Canal Blvd., will host a screening of the documentary “Traces of the Trade: A Story From the Deep North,’’ at noon Monday.