Ah, another "X" number of favorite classical music pieces question. There are so many to choose from and I always have to ask whether it's favorites now, or favorites in the past number months or years. Trying to choose gives me existential angst! But lately I think these have gotten a little more play than a lot of others:
Beethoven Symphonies Nos. 4, 6, 8, and 9.
Beethoven Violin Concerto.
Mussorgsky (orchestrated by Ravel)--Pictures at an Exhibition
But here's some more:
Bach, 6 Brandenburg Concertos, Magnificat, various Cantatas, 4 Orchestral Suites, and for organ, 4 Great Toccatas and Fugues, Passacaglia, Schuebler Chorales.
Haydn--Paris and London Symphonies, also Nos. 22, 24, and 77, String Quartets
Handel--Messiah, Water Music, Fireworks Music
Kraus-Symphonies
Vanhal--Symphonies
Mozart--Symphonies 35 and 41, 6 Quartets dedicated to Haydn, Piano Concertos Nos. 17 and 21, Clarinet Concerto, Clarinet Quintet, Requiem, Overtures
Beethoven--9 Symphonies, String Quartets, Violin Concerto, Piano Concertos, Piano Sonatas, Overtures
Schubert--Symphonies 8 and 9, numerous songs, Trout Quintet, Late String Quartets
Rossini--Overtures
Berlioz--Harold in Italy, Overtures
Mendelssohn--Symphony No. 3, Hebrides Overture
Chopin--Etudes, Nocturnes, Waltzes, Ballades, Sonata No. 2, etc.
Schumann--4 Symphonies, Piano Concerto, Kinderscenen
Berwald--Symphonies 3 and 4, Septet
Grieg--Peer Gynt Suites, Piano Concerto
Von Suppe--Overtures
Tchaikowski--Nutcracker, Symphony No. 5, Mozartiana
Brahms--4 Symphonies, Violin Concerto, 2 Piano Concertos, Clarinet Quintet, 3 Quartets, Serenade No. 1, German Requiem
Dvorak--Cello Concerto, Symphony No. 9, late quartets
Wagner--Ring Cycle, Overtures, Siegfried Idyll
Verdi--Rigoletto, Il Trovatore
Puccini--La Boheme, Tosca
Leoncavallo--Pagliacci
Mascagni--Cavalleria Rusticana
Bruckner--Symphonies Nos. 4 and 7
Mahler--Das Lied von der Erde, Symphonies Nos. 1 and 4
Rachmaninoff--Symphony No. 2, Piano Concerto No. 3, Isle of the Dead
Sibelius--7 Symphonies, 4 Lemminkainen Suites, Karelia Suite, Violin Concerto
Debussy--La Mer, String Quartet
Ravel--Rapsodie Espagnole, String Quartet
Prokofiev--Symphony No. 1 ("Classical Symphony"), Romeo and Juliet, Alexander Nevsky cantata, Peter and the Wolf
Vaughan Williams--Tallis Fantasia
Stravinsky--Firebird Suite
Copland--Appalachian Spring, Billy the Kid
Grofe--Grand Canyon Suite
Taylor--Through the Looking Glass
Mayuzumi--Samsara tone poem
Hovhanhess--Symphonies Nos. 2 ("Mysterious Mountain") and 50 ("Mt. St. Helen's")
Takemitsu--At the Edge of a Dream