At his car dealership in Kenner, Ronnie Lamarque can barely contain his excitement. This is the greatest honor that I could ever have, I m not going to disappoint, God willing, I m not going to disappoint, Lamarque said.When the famed New Orleans Jazz & Heritage Festival announced its lineup: Lamarque s name was there, on the release with such headliners as the Foo Fighters, Lizzo and Jimmy Buffett. I looked at it very humbly, like, do I belong? And I m sure some people who read that felt the same way, so now I have to perform, Lamarque said.And performing is nothing new to this businessman, born and raised in Arabi.Back in the late 80 Lamarque first showed off his pipes, singing on national TV as one of his racehorses ran in the Kentucky Derby.Then in 2017, he held a concert at the Jefferson Parish Performing Arts Center to a sold-out crowd . singing Sinatra classics.And one year later, in 2018 he appeared on NBC s America s Got Talent.Now, it s the city s largest outdoor mu