Au bord d'une source ("Beside a Spring") is a piano piece by Franz Liszt; it is the 4th piece of the first suite of Années de Pèlerinage ("Years of Pilgrimage").
[2] The second version of Au bord d'une source is often regarded as the most popular.
This constant crossing over of hands places considerable technical demands on the amateur pianist.
Liszt links the various sections of the piece together using passages of intricate scale and arpeggio patterns ascending high into the upper register, descending back down and transforming back into the melody; this allows the whole piece to flow as one.
The piece has many intricate difficulties that are belied by the calm mood with which a successful performance is often imbued.