Parents - this resource requires you to create a free account
The Berlin Philharmonic has a large variety of music to check out. Some of my favorites include:
Symphonie Fantastique by Hector Berlioz
Symphony No. 7 in A Major. and Symphony No. 5 in C Minor by Ludwig van Beethoven
Symphony No. 3 in F Major by Johannes Brahms
The Young Person's Guide to the Orchestra by Benjamin Britten
Symphony No. 9 in E Minor "From the New World" by Antonin Dvorak
Enigma, Variations on an Original Theme and Concerto for Cello and Orchestra in E Minor by Edward Elgar
Peer Gynt Suites by Edvard Grieg
Night on Bald Mountain by Modest Mussorgsky
Concerto for Piano and Orchestra No. 2 by Sergei Rachmaninoff
Scheherazade, Symphonic Suite by Nikolai Rimsky-Korsakov
L'Oiseau de feu (Firebird Suite), and Le Sacre du printemps (Rite of Spring) by Igor Stravinsky
Piano Concerto No. 1 in B flat Minor, and Concerto for Violin and Orchestra in D Major by Pyotr Ilych Tchaikovsky
And literally anything featuring Yo-Yo Ma on cello.
All of these pieces are also available on YouTube if you don't want to create an account with the Berlin Phil.