Complex sentence: During one such daily walk, Drigo composed the ballet's famous "Serenade", which he set to the accompaniment of a solo mandolin, and the "Berceuse de Columbine", which was written especially for the harpist Albert Zabel.
Split into simpler sentences: During one such daily walk, Drigo composed the ballet's famous "Serenade", which he set to the accompaniment of a solo mandolin. Another piece of note is the "Berceuse de Columbine", written especially for the harpist Albert Zabel.