For more than two decades, Joshua Bell has enchanted audiences worldwide with his breathtaking virtuosity and tone of rare beauty. In this SundayArts profile, we learn about his musical upbringing, the influence of his teacher Josef Gingold, his enjoyment of playing music in an intimate environment such as his home, as well as in venues as large as Carnegie Hall, and his time working with Sting, Kristen Chenoweth, pianist Frankie Moreno, other stars for his new album “At Home With Friends.”