Yes, Albert Einstein was known to have been a skilled amateur musician and had a particular affinity for playing the violin. However, there is no widely documented evidence to suggest that he was proficient at playing the piano. The violin was his primary musical instrument, and he would often enjoy playing it to relax and unwind. Einstein's love for music was well-known, and he considered it an integral part of his life and thinking process. He found solace and inspiration in music and believed it had a profound influence on his scientific work.