When Sergei Ivanovich began to play outside a pharmacy in Dnepropetrovsk, Ukraine, he was surprised when a four-legged audience member wandered up and began to accompany him.
The stray dog took a seat beside Ivanovich and began to howl along to the music in a memorable impromptu duet.
Onlookers loved it and tipped generously. They also encouraged Ivanovich to take the dog home with him, which he was happy to do.
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