Pennsylvania Sinfonia Orchestra, conducted by Music Director Allan Birney, presents “An Afternoon with Mozart,” 4 p.m. March 3, Christ Lutheran Church, Allentown.

An all-Mozart concert on a March afternoon has become an anticipated part of the Sinfonia’s season schedule.

The program includes “Symphony No. 17 in G,” K. 129; “Exultate, Jubilate,” K. 165, and the “Violin Concerto No. 4 in D,” K. 218, in which violinist Rebecca Brown is soloist.

“Exultate, Jubilate” is a three-movement motet for voice and orchestra. In modern practice, the solo part is generally sung by a female soprano. Joining the Sinfonia for the performance is soprano Fiona Gillespie, a Lecturer in Music at Muhlenberg College.

She received an M.M in Voice with a concentration in Early Music from the University of North Texas. A native of Bethlehem, she attended the Lehigh Valley Charter High School for the Arts.

Brown, principal second violin of the Sinfonia for 30 years, is a frequent soloist during “Valley Vivaldi” and performs with the Bach Festival Orchestra, Satori chamber ensemble and Allentown Symphony Orchestra.

Wolfgang Amadeus Mozart composed Violin Concerto in D, along with those in G and A major, in Salzburg in 1775, when he was 19. The works were intended for a concert tour.

According to Brown, when composer Franz Joseph Haydn, then in his 40s and at the peak of his career, heard the concertos, he wrote to Leopold Mozart, Wolfgang’s father: “Your son could be the king of the violin if he so chose.”

“But that wasn’t the life young Mozart wanted,” says Brown. Instead, he became a composer and pianist. His compositions for violin were not as extensive. “So we are lucky to have these gems,” Brown says.

Mozart composed Symphony No. 17 when he was 16. This would be a tender age for most composers, but his work shows great signs of accomplishment and maturity. He wrote his first symphony at age eight.

The Pennsylvania Sinfonia Orchestra is a professional orchestra based in Allentown that has presented a year-round schedule of concerts for the Lehigh Valley public for more than 35 years.

The group emphasizes its role as a chamber orchestra, which is smaller than a symphony orchestra, to play pieces from the classical repertoire written for smaller instrumental forces, producing an intimate sound with agility and clarity.

Tickets, at the door, Christ Lutheran Church, 1245 W. Hamilton St., Allentown; PASinfonia.org; 610 434-7811. Tickets for those 62 and older are available. Students are fee. A limited number of economy tickets for any age is available for seating in rear rows and must be ordered by phone by the Friday before the concert.