The arrival of June signals the start of “Valley Vivaldi,” a summer series of four chamber ensemble concerts by instrumentalists from the locally-based Pennsylvania Sinfonia Orchestra.

The concerts showcase chamber music by 17th and 18th century composers (Vivaldi, J. S. Bach and Telemann are a few of the enduring favorites) presented by small ensembles of mixed instrumentalists. The qualities of each instrument and the virtuosic playing of each musician are easily heard in the clear, transparent textures.

Valley Vivaldi begins at 7:30 p.m. June 11 in Christ Lutheran Church, 1245 W. Hamilton St., Allentown.

The concert opens with the Concerto in G for strings, “Alla Rustica,” RV 151, by the series’ namesake Antonio Vivaldi.

Two pieces on the program feature two flutes, played by flutists Robin Kani and Christine Moulton: Concerto in C for two flutes and strings, RV 533 by Vivaldi, and one of J. S. Bach’s well-known and well-loved Brandenburg Concertos, No. 4 in G, BWV 1049, with solo lines for two flutes and violin against the rich accompaniment of strings. Rebecca Brown is solo violinist in the Brandenburg.

Often, a “Valley Vivaldi” concert will include a piece by a more obscure composer, giving the audience a chance to “meet” him, not only through the music itself, but also by brief comments that the musicians give before a piece is played. These insights into the composer, or musical techniques, or the context when it was written, add personality to the evening. On this concert, Sinfonia principal trumpet Lawrence Wright and colleagues will perform the Sonata in F for trumpet and strings by Pietro Baldassare, an Italian Baroque composer.

“Baldassare wrote several sonatas for cornetto, an instrument similar to the recorder but played with a brass embouchure and mouthpiece,” according to Wright. “On the trumpet, they are lyrical and virtuosic treats.”

One more piece, Trio sonata da chiesa in C, Op.1 No. 7, is by noted Italian violinist and composer Arcangelo Corelli, predecessor of Vivaldi, is on the program.

Musicans for the concert, in addition to Kani, Moulton, Brown and Wright, are Mary Ogletree, violin; Simon Maurer, violin; Agnès Maurer, viola; Elizabeth Mendoza, cello; Stephen Groat, bass, and Allan Birney, harpsichord.

There’s a post-concert reception with refreshments.

The next three Valley Vivaldi concerts this summer have similarly upbeat Baroque programs, with featured solos for recorder, violins, oboe and cello.

Tickets may be purchased for individual concerts or as a summer subscription. A limited number of economy tickets (for any age) for seating in rear rows must be ordered by phone by the Friday before the concert. PASinfonia.org; 610 434-7811