The piece
La candeur (Candour) opens the 25 Easy and Progressive Studies, Op. 100, which Burgmüller, a German pianist settled in Paris, published in 1851, each with a French title. It is a study in legato, where the right hand unrolls groups of eighth notes above long chords. As often in this book, the title names a character rather than a difficulty; here, simplicity and a clear sound. Noctave took it from a nineteenth-century Litolff edition.
The right-hand eighths fall in groups of four, G–E–D–C, then start again from the top: each group is slurred, and the hand shifts back up a fifth without accenting the restart. Toward the middle the roles reverse: the left hand takes over the eighths while the right holds thirds, and that is often the less practised hand, so give it a few minutes alone. Dynamics matter: nearly everything is soft, with a single sforzando, before the pianissimo ending. At the set tempo, the right hand strings together four notes a second.