Tune-Up Philly began as an after-school program of novice Saint Francis de Sales Catholic School student-musicians tentatively playing “Twinkle Twinkle Little Star” at the beginning of the school year. Hours and hours of practice and a dozen or so concerts later, those same musicians will tackle Beethoven and Rossini today at the year-end concert from 2 p.m. to 3 p.m. at the school (4625 Springfield Ave.)

The program, which features 6 to 13-year-olds and is designed to build self-esteem and a passion for music, has garnered praise across the city throughout the school year. Its director, Curtis Institute of Music graduate Stanford Thompson, hopes to take the program to the Henry C. Lea School (4700 Locust St.) next fall.

Today’s concert, which is free, will feature the Tune Philly Symphony Orchestra, Wind Ensemble, Choir, and String Orchestra.