Three dogs joined the Danish Chamber Orchestra for a special performance in Copenhagen.
Cookie, Sophus, and Sica barked along to the tune of the Hunting Symphony, a little-known piece by Mozart's father, Leopold.
Dozens of dogs auditioned for the part and it took three months to train the successful candidates.
BBC Newshour's Rebecca Kesby spoke to chief conductor Adam Fischer about the instructions for this musical composition, and what it was like to work with these unusual collaborators.