He was dissatisfied with his technique (especially when playing scales) when compared to the magical performances of Paganini on the violin, and experimented with improving his technique.

于是进行了许多改进他的钢琴技术的试验。最终他以满意的新技术出台。

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Hoffman says that when he was a youngster, he fell asleep most nights listening to the magical sounds of Heifetz, especially his recording of Mendelssohn's Violin Concerto.

NPR: Heifetz and Kreisler: Setting Standards for the Violin

On display is, not only the first violin ever made in America, but also the bow, made in Hollywood, back in 1940, especially for Albert Einstein.

NPR: The Importance of the Bow