Joseph Haydn is widely regarded as the 'father of the symphony' due to his significant contributions to the development of the genre in the 18th century.

La Scala is one of the most renowned opera houses in the world, known for its prestigious performances and rich history.

Johann Sebastian Bach composed the 'Brandenburg Concertos,' a set of six concertos dedicated to Christian Ludwig, Margrave of Brandenburg.

Tchaikovsky's Violin Concerto in D major, Op. 35, is one of the most popular and frequently performed violin concertos in the classical music repertoire.

The organ is often referred to as the 'king of instruments' due to its grand size, complex structure, and powerful sound.

Beethoven's Symphony No. 9 in D minor, Op. 125, also known as the 'Choral Symphony,' is renowned for its inclusion of the 'Ode to Joy' in the final movement.

Georges Bizet composed the opera 'Carmen,' a tragic story set in Seville, Spain, featuring iconic characters like Carmen and Don José.

Tchaikovsky's 'Swan Lake' is a classical ballet in four acts, featuring the story of Odette, a princess transformed into a swan by an evil sorcerer.

The flute is a woodwind instrument known for its high-pitched, clear, and lyrical sound.

Puccini's 'La Bohème' is an opera in four acts, set in Paris, depicting the lives of young artists and their struggles with love, friendship, and poverty.

Antonio Vivaldi composed the 'Four Seasons' violin concertos, a set of four concertos representing the different seasons of the year.

Brahms' Symphony No. 4 in E minor, Op. 98, is one of his most popular and frequently performed symphonies.

The double bass is a string instrument known for its low, resonant sound, often used in orchestras and jazz ensembles.

Wagner's 'Der Ring des Nibelungen' is a cycle of four operas based on Germanic mythology, including 'Das Rheingold,' 'Die Walküre,' 'Siegfried,' and 'Götterdämmerung.'

Beethoven's 'Moonlight Sonata' is a piano sonata in three movements, known for its serene and melancholic melody.