Albert Roussel; Rhapsodie Flamande.

It's not all that familiar to me and I think there is only one commercial recording currently available of the piece and prior to that, I think perhaps one or two. So this could constitute one of the first recordings by a composer whose output was rather large, but very little of it has been performed.

Further evidence there is a vast reservoir of music that hasn't been heard, not only by completely obscure composers, but many who are well known. It's all waiting for willing ears.