of course it might also be from an orchestral arrangement of a chamber or piano work e.g., which makes this harder still. Something originally published before or in 1883 assuming the attribution to Hiller is genuine etc. etc. etc. etc. etc. * n * n ^ n.
The main theme, after an unmeasured cadenza and two bars, begins (Allegretto, A-flat again in Fischer's version if not necessarily in the presumed original; in Lilypondish notation- sorry!) Es8- C' rest as F rest des rest Bes8.[ c16 bes8] as
(and so forth )
(Which see. Will try to solve the problem myself still, of course. Thanks!)
(Hrm. I see our list of Hiller's works could use an accounting of his works without opus number and is actually not as complete as I thought. Well, it's (general it's, not specific it's

Eric S.