Leonard Bernstein, were he still living, would have hit his century mark on Aug. 25.

“American Dreaming” will be a concert of works by Bernstein, his contemporaries Aaron Copland and Louis Moreau Gottschalk, and two of the most esteemed 21st-century composers, Eric Whitacre and bluegrass-inspired composer and violinist Marc O’Connor.

Concert goers will also have a rare opportunity to hear a performance by music director Ron Spigelman when he steps off the podium to perform on trumpet.

“Water Night for String Orchestra,” a work by Whitaker written in 1995, will introduce the concert. Whitacre said “the music sounded in the air” as he read the poetry of Octavio Paz. The work was “basically finished it about 45 minutes. I have never experienced anything like it, before or since.”

Sinfonietta members flutist Anne Harrow and percussionist Tony Oliver will follow with the rarely performed “Halil Nocturne,” written by Bernstein in the 1970s. Halil means flute in Hebrew, and the composer dedicated the piece to an Israeli flute student who was killed in the 1973 war.

O’Connor might be considered the quintessential American composer. A violin virtuoso, he manages to combine bluegrass, country, jazz and classical music. His “Strings and Threads Suite” was performed at Lincoln Center in 2001.

Sunday’s O’Connor performance will feature violinist Daniel Szasz, concertmaster of the Alabama Symphony Orchestra as well as the Sinfonietta. Born in Transylvania, Szasz began his performing career at the age of 8 in Romania, going on to win competitions there as well as in Italy and the U.S. He performs on a rare 1755 Italian violin crafted by Bartolomeo Calvarolla.

Gottschalk was an American romantic composer and pianist best known as a virtuoso performer of his own piano works. He was exposed at an early age to strains of Creole music of his native New Orleans, which is thought to have influenced his compositions. The lush “A Night in the Tropics” is from his first and most enduring symphony.

Spigelman, in his last season with the orchestra, and Sinfonietta principal oboist Cynthia Watson will perform “Quiet City” by Copland, who is best known to most Americans for composing “Fanfare for the Common Man,” the ubiquitous theme music for the Olympics. The one-movement work is thought to have been derived by Copland from music he had written earlier for an Irwin Shaw play.

Watson received her bachelor’s degree from the Eastman School of Music and went on to a master’s degree at Yale. She has performed with several symphonies in the U.S. and abroad, including China. Her recordings include CBS Masterworks with Wynton Marsalis and the Eastman Wind Ensemble.

Rounding out the salute to “American Dreaming” will be the “Overture to Candide for Wind Quintet” by Leonard Bernstein and the original suite for 13 instruments of “Appalachian Spring” by Copland.

This July 22 concert, as others in the Sunday Sinfonietta series, will begin at 7:30 p.m. at the Lake Placid Center for the Arts. Tickets cost $25 and $5 for youths 18 and under, and may be obtained online at www.lakeplacidsinfonietta.org or www.lakeplacidarts.org, at the LPCA box office at 518-523-2512, or at Gallery 46 on Main Street.

Anyone interested in attending is advised that, despite the Ironman race that day, Old Military Road in Lake Placid will be open for traffic, as will state Route 86 coming from Saranac Lake and ample parking will be available at the arts center.