Philip Smith, 25, is fourth trumpeter in the world-famous Chicago Symphony Orchestra, but on Sundays he heads for another gig—as a member of the uniformed Salvation Army band, the Mont Clare Corps. In concert halls he plays for Sir Georg Solti and on street corners for the glory of God. A third-generation Salvation Army brat, Smith was taught the cornet by his father, who is director of the Army's New York staff band. His grandfather was a euphonium player in its Clacton-on-Sea Citadel band in England. "The Army has a tendency to raise musicians," explains Smith. He started lessons at 7 and hated to practice, but, Smith says, his father "must have been doing something right." The senior Smith was the only teacher Philip had until he entered the Juilliard School in New York. Before joining the Chicago Symphony two years ago (he beat out 70 other applicants for the spot), Smith spent several summers playing with a religious rock band called Redemption on the boardwalk at Asbury Park, N.J. His wife, Sheila, plays alto horn in the Mont Clare band and conducts a junior choir. If they have children, the Smiths plan to teach them the cornet. "Most music is spiritual," Smith says. "It comes from the inner soul."