What was a key innovation in the development of rhythm and blues?

The key innovation in the development of rhythm and blues was the electrical amplification of instruments. This technological advancement allowed musicians to produce louder, more dynamic sounds, which were essential for live performances and recordings. Amplification brought forth the ability to play with greater energy and intensity, ultimately transforming the musical landscape.

In rhythm and blues, amplified instruments provided the boldness needed for the genre's distinctive sound, influencing the style of rhythm, tempo, and overall musical expression. The use of electricity enhanced the appeal of rhythm and blues, making it more accessible to larger audiences and paving the way for further developments in popular music genres, including rock and roll.

While elements such as piano and jazz integration contributed to the richness of rhythm and blues, it was the capacity for amplification that truly reshaped the performance and listening experience, marking a significant turning point in the genre's evolution.