Which of the following was a key feature of music produced in Tin Pan Alley?

The key feature of music produced in Tin Pan Alley was song simplicity and catchy melodies. This era, which flourished in the late 19th and early 20th centuries, focused on creating popular songs that were easily accessible to a broad audience. The goal was to appeal to the general public, which meant crafting tunes that could easily be remembered and sung along to.

Songwriters in Tin Pan Alley often utilized repetitive structures and simple harmonies, allowing for catchy and memorable melodies that resonated with everyday listeners. This emphasis on melodic appeal was essential for the commercial success of songs during this time, as it helped ensure that they would be popular and often performed in a variety of settings, from vaudeville acts to early radio broadcasts.

In contrast, the other choices reflect different characteristics that do not align with the Tin Pan Alley model. Complex orchestration and strict adherence to classical forms indicate a level of sophistication and tradition not typical of the catchy pop songs originating from this movement. Similarly, experimental genres suggest a departure from the mainstream appeal that defined Tin Pan Alley, as the focus was primarily on creating popular tunes rather than exploring avant-garde or unconventional musical expressions.