Pennsylvania Sinfonia Orchestra, the Lehigh Valley chamber orchestra founded by its Music Conductor Allan Birney, begins its 2015-16 season with “Baroque and Beyond,” 7:30 p.m. Oct. 3, Christ Lutheran Church, 1245 W. Hamilton St., Allentown.

Thomas Pfefer, guitar, and the orchestra perform “The Guitar Concerto in A” by Ferdinando Carulli.

Lawrence Wright, trumpet, and the orchestra perform “Trumpet Concerto in D” by Giuseppe Torelli.

Also on the program is “Concerto Grosso in G” by George F. Handel and “Holberg Suite” by Edvard Grieg.

Thomas Pfefer, 16, of Bethlehem, has played classical guitar for more than 10 years. He received first place in the 2011 Guitar Foundation of America Competition, junior division, and the 2014 Philadelphia Classical Guitar Competition, high school division. He was featured on NPR’s national show “From the Top” and was selected by the Bach Choir of Bethlehem to be a part of the Chaconne Project and Zimmerman Coffee House concerts led by Dr. Larry Lipkis.

Wright, principal trumpet of the Sinfonia, performs in the Sinfonia’s summer series “Valley Vivaldi,” as well as with the Bethlehem Bach Festival Orchestra, Allentown Symphony and Philadelphia Brass.

A musicians’ reception follows the concert.

Tickets: at the door, PASinfonia.org . 610 434-7811