Henri Duparc's "Lamento" was written in 1868, while the twenty-year old was a student of Cesar Franck, whose influence shows. Walter Everett (2004, 52) reads the pitch design in very nearly the way I do below, with ^5 prolonged for quite some time. then the line rising through A#4 to ^6 (B-nat4) and through C-nat5 to ^7 (C#5) and finally to ^8 (D5). The bass support is the tonic for ^5, nat-VI for ^6 (!), V7 for ^7, and the tonic again for ^8. (Score notation is by Pierre Gouin and is available on IMSLP. My apologies for artifacts I've introduced in the first section below through compressing the width and moving measure 7 up a system.)
Reference: Everett, Walter. 2004. "Deep-Level Portrayals of Directed and Misdirected Motions in Nineteenth-Century Lyric Song." Journal of Music Theory 48/1 (2004): 25-58.