Final answer:
Many famous composers wrote popular songs in the 19th century, during the Romantic era of music.
Step-by-step explanation:
The Romantic era of music, which took place in the 19th century, produced many famous composers who wrote popular songs that are still well-known today. Some of these composers include Brahms, Tchaikovsky, Schumann, Schubert, Chopin, and Wagner. Other composers like Strauss, Verdi, Liszt, Mendelssohn, Puccini, and Mahler may also be familiar. While Ludwig van Beethoven's earlier works are from the Classical period, his later music is considered Romantic and includes some of his most famous compositions.