Since 1994, the Symphony In The Glen Free Concert program has been based in Griffith Park at the Old Zoo Picnic Area.

Film and television composer Arthur B. Rubinstein founded Symphony In The Glen (SIG) in 1993 to cultivate new generations of classical music lovers.

SIG is a Los Feliz/Griffith Park based organization committed to creating a vibrant sense of community through outdoor classical music concerts that are fun for people of all ages while engaging the whole family in education by osmosis.

The professional orchestra, led by Maestro Rubinstein, has performed landmark concerts in Griffith Park since 1994. Free summer concerts presented at the historic Old Zoo Picnic Area include Out of the Ashes, a benefit concert for Griffith Park recovery after the 2007 fire destroyed over 800 acres of parkland.

Fantastic Creatures, a concert in partnership with the Greater Los Angeles Zoo Association, introduced some 800 Los Angeles school children to the animal kingdom as portrayed in symphonic music. A highlight of the program was Saint-Saëns Carnival of the Animals with animal poems written and read by third-graders from The Accelerated School. The field trip concluded with a zoo tour of the actual animals.

On October 4 of 2009, Symphony In The Glen presented the first ever symphony concert on the front lawn of Griffith Observatory for the Observatory’s Cosmic Conjunction, a celebration of the International Year of Astronomy. This gala event featured the premiere performance of Arthur B. Rubinstein’s composition Observations, narrated by Leonard Nimoy. The Observatory concert, sponsored by the Friends Of The Observatory, was repeated two days later in partnership with The Greek Theatre and Nederlander Concerts for over 3,000 school children. In 2011, a studio recording of that historic concert was released, under the title Observations, by Symphony In The Glen and is now available in CD and digital download.

One of the main aims of Symphony In The Glen Free Concert program is to provide excellent classical music performances in an atmosphere welcoming to children and families. The response has been outstanding; often a third of the audience is children. To maximize the children's exposure to the music, Symphony In The Glen introduced pre-concert activities in 1997. These parent/child activities, designed for whole-family learning, are offered at free concerts and geared toward focusing children on the music and the performance. There is nothing more powerful than the synergy created when parent and child learn together. These activities are enormously popular.

Since 1994, over 60,000 Angelenos have come to hear Symphony In The Glen perform 200+ classical works during 42 free concerts. Maestro Rubinstein holds that the best way to spark a lifelong love of classical music is to make live symphony concerts an integral part of family life.

Maestro Rubinstein frequently composes new works that complement his thematic programming. Themes encompass a surprising variety of topics: concertgoers have explored the resonance between the cosmos and a violin bow in String Theory; entered the profoundly silly world of Commedia Dell'arte in Masquerades and Other Serious Fun; and toured The American Landscape with the music of Aaron Copland, Leonard Bernstein and George Gershwin. Symphony In The Glen has been honored to present Peter and the Wolf with narrators such as Charlton Heston, Marion Ross, Elizabeth Peña, Ed Asner, and the legendary Stan Freberg.