Of course the most difficult thing on the violin is always intonation. The second one is rhythm. If you play in tune, in time with a good sound that's already high level. Those three are the main things.

Ricci held master classes in the United States and Europe. Ricci gave his first public performance in 1928 at the age of 10 in San Francisco where he played works by Wieniawski and Vieuxtemps. Ricci owned many precious instruments including the Guarneri Del Gesù violin known as the ex-Bronisław Huberman of 1734 a fine Storioni a Luiz Bellini a Curtin & Alf a David Bague and a couple of Regazzi.

Ruggiero Ricci (July 24 1918 – August 6 2012) was an American violinist known for performances and recordings of the works of Paganini.